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United States Department of Agriculture

Agricultural Research Service

Related Topics

Nancy W Shappell
Animal Metabolism-agricultural Chemicals Research
Physiology

Phone: (701) 239-1233
Fax: (701) 239-1430

USDA,ARS,BRL
1605 ALBRECHT BLVD N
FARGO , ND 581022765

Projects
Detection and Fate of Chemical and Biological Residues in Food and Environmental Systems
Appropriated (D)
  Accession Number: 430408

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Missing links in our understanding of estrogenic compounds; chemical quantitation vs. biological assessment – where do we go from here? -
Distribution of animal drugs between skim milk and milk fat fractions in spiked whole milk: Understanding the potential impact on commercial milk products Reprint Icon -
Hakk, H., Shappell, N.W., Lupton, S.J., Shelver, W.L., Fanaselle, W., Oryang, D., Yeung, C., Hoelzer, K., Ma, Y., Gaalswyk, D., Pouillot, R., Van Doren, J.M. 2016. Distribution of animal drugs between skim milk and milk fat fractions in spiked whole milk: Understanding the potential impact on commercial milk products. Journal of Agricultural and Food Chemistry. 64(1):326-335.
Estrogenic activity and nutrient losses in surface runoff after winter manure application to small watersheds Reprint Icon -
Shappell, N.W., Billey, L.O., Shipitalo, M.J. 2016. Estrogenic activity and nutrient losses in surface runoff after winter manure application to small watersheds. Science of the Total Environment. 543:570-580.
The effects of steroid implant and dietary soybean hulls on estrogenic activity of sera of steers grazing toxic endophyte-infected tall fescue pasture -
Shappell, N.W., Flythe, M.D., Aiken, G.E. 2015. The effects of steroid implant and dietary soybean hulls on estrogenic activity of sera of steers grazing toxic endophyte-infected tall fescue pasture. Frontiers in Veterinary Science. DOI: 10.3389/fvets.2015.00030.
Estrogenic compounds, chemical quantitation, biological assessment – What we know, what we don’t, and what should our future priorities be? -
Shappell, N.W. 2015. Estrogenic compounds, chemical quantitation, biological assessment – What we know, what we don’t, and what should our future priorities be? [abstract]. 36th Annual Society of Environmental and Toxicology and Chemistry. Nov. 1-5, 2015. Salt Lake City, UT. Paper no. WP110.
Modulation of estrogenic exposure effects via alterations in salinity and dissolved oxygen in male fathead minnows, Pimephales promelas -
Feifarek, D.J., Rearick, D.C., Shappell, N.W., Schoenfuss, H.L. 2015. Modulation of estrogenic exposure effects via alterations in salinity and dissolved oxygen in male fathead minnows, Pimephales promelas [abstract]. 36th Annual Society of Environmental and Toxicology and Chemistry. Nov. 1-5, 2015. Salt Lake City, UT. Paper no. RP132.
Synthesis, spectral characterization, biological activity, and soil:water fate of brominated 17ß-estradiol isomers -
Consumption of ground beef obtained from cattle that had received steroidal growth promotants does not trigger early onset of estrus in prepubertal pigs Reprint Icon -
Magolski, J.D., Shappell, N.W., Vonnahme, K.A., Anderson, G.M., Newman, D.J., Berg, E.P. 2014. Consumption of ground beef obtained from cattle that had received steroidal growth promotants does not trigger early onset of estrus in prepubertal pigs. Journal of Nutrition. 144(11):1718-1724.
Potential bioactivity and association of 17ß-estradiol with the dissolved and colloidal fractions of manure and soil Reprint Icon -
Chambers, K.B., Casey, F.X., Hakk, H., Desutter, T.M., Shappell, N.W. 2014. Potential bioactivity and association of 17ß-estradiol with the dissolved and colloidal fractions of manure and soil. Science of the Total Environment. 494/495:58-64.
Modulation of estrogenic effects by environmental temperature and food availability -
Feifarek, D.J., Shappell, N.W., Schoenfuss, H.L. 2014. Modulation of estrogenic effects by environmental temperature and food availability [abstract]. 4th International Conference on Occurrence, Fate, Effects, and Analysis of Emerging Contaminants in the Environment, August 19-22, 2014, Iowa City, IA. Presented in Effects - III module: 9:45-10:00 a.m..
Modulation of estrogenic effects by environmental temperature and food availability -
Feifarek, D.J., Shappell, N.W., Schoenfuss, H.L. 2014. Modulation of estrogenic effects by environmental temperature and food availability [abstract]. Midwest Regional Society of Environmental Toxicology and Chemistry, March 24-25, 2014, Chicago, IL. p. 13.
Modulation of estrogenic exposure effects mediated through temperature and dietary regimens in male fat head minnows -
Serum estrogenicity and biological responses in African catfish raised in wastewater ponds in Ghana -
Asem-Hiablie, S., Church, C., Elliott, H.A., Shappell, N.W., Schoenfuss, H.L., Drechsel, P., Williams, C.F., Knopf, A.L., Dabie, M.Y. 2013. Serum estrogenicity and biological responses in African catfish raised in wastewater ponds in Ghana. Science of the Total Environment. 463-464. p.1182-1191.
E-Screen - potential tool for assessment of relative serum estrogenicity -
Bioassay of estrogenicity and chemical analysis of estrogens in streams across the United States associated with livestock operations Reprint Icon -
Alvarez, D.A., Shappell, N.W., Billey, L.O., Bermudez, D.S., Wilson, V.S., Kolpin, D.W., Perkins, S.D., Evans, N., Foreman, W.T., Gray, J.L., Shipitalo, M.J., Meyer, M.T. 2013. Bioassay of estrogenicity and chemical analysis of estrogens in streams across the United States associated with livestock operations. Water Research. 47:3347-3363.
Egg wash wastewater: Estrogenic risk or environmental asset? Reprint Icon -
Shappell, N.W. 2013. Egg wash wastewater: Estrogenic risk or environmental asset? Integrated Environmental Assessment and Management. 9(3):517-523.
Consumption of beef from cattle administered estrogenic growth promotants does not result in premature puberty and obesity using the swine model -
Magolski, J.D., Anderson, G., Shappell, N.W., Vonnahme, K.A., Berg, E.P. 2012. Consumption of beef from cattle administered estogenic growth promotants does not result in premature puberty and obesity using the swine model. Proceedings 58th International Congress of Meat Science & Technology, August 12-17, 2012, Montreal, Canada. 58:D85.
Evaluation of surface waters associated with animal feeding operations for estrogenic chemicals and activity -
Shappell, N.W., Alvarez, D., Kolpin, D., Forman, W., Gray, J., Meyer, M. 2012. Evaluation of surface waters associated with animal feeding operations for estrogenic chemicals and activity. Society of Environmental Toxicology and Chemistry North American 33rd Annual Meeting, November 11-15, 2012, Long Beach, CA. p. 377.
E-Screen evaluation of sugar beet feedstuffs in a case of reduced embryo transfer efficiencies in cattle: the role of phytoestrogens and zearalenone -
Shappell, N.W., Mostrom, M.S., Lenneman, E.M. 2012. E-Screen evaluation of sugar beet feedstuffs in a case of reduced embryo transfer efficiencies in cattle: the role of phytoestrogens and zearalenone. In Vitro Cellular and Developmental Biology - Animals. 48:216-228.
Comparing biological effects and potencies of estrone and 17 B-estradiol in mature fathead minnows, Pimephales promelas -
Dammann, A.A., Shappell, N.W., Bartell, S.E., Schoenfuss, H.L. 2011. Comparing biological effects and potencies of estrone and 17 B-estradiol in mature fathead minnows, Pimephales promelas. Aquatic Toxicology. 105:559-568.
Estrogenic activity – a frame of reference for some foods, agricultural wastewaters, and animal feedstuffs. -
Shappell, N.W. 2011. Estrogenic activity – a frame of reference for some foods, agricultural wastewaters, and animal feedstuffs. Society of Environmental Toxicology and Chemistry North America 32nd Annual Meeting, November 13-17, 2011, Boston, MA. Abstract 302. p. 70.
In vivo and in vitro estrogenicity and GC/MS/MS and LC/MS/MS quantification of estrogens in aqueous mixtures of raw and pelletized poultry litter -
Yonkos, L.T., Fisher, D.J., Friedel, E.A., Wilson, V.S., Hutchins, S.R., Lazorchak, J.M., Reddy, T.V., Shappell, N.W., Van Veld, P.A., Hale, R.C. 2011. In vivo and in vitro estrogenicity and GC/MS/MS and LC/MS/MS quantification of estrogens in aqueous mixtures of raw and pelletized poultry litter. Society of Environmental Toxicology and Chemistry North America 32nd Annual Meeting, November 13-17, 2011, Boston, MA. abstr. 17, p. 8.
Estrogenicity of sugar beet by-products used as animal feeds -
Shappell, N.W., Lenneman, E.M., Mostrom, M.S. 2011. Estrogenicity of sugar beet by-products used as animal feeds [abstract]. American Society of Animal Science and American Diary Science Association, July 10-14, 2011, New Orleans, LA. p. 252.
Comparing biological effects of estrone (E1) and 17ß-estradiol (E2) in mature fathead minnows -
Dammann, A.A., Shappell, N.W., Billey, L.O., Bartell, S.E., Schoenfuss, H.L. 2011. Comparing biological effects of estrone (E1) and 17B-estradiol (E2) in mature fathead minnows. Joint Meeting of the Midwest Society of Environmental Toxicology and Chemistry and the Chicago Regional Chapter of Society for Risk Analysis, March 23-24, 2011, Lake Geneva, WI.
Estrogenicity of agricultural by-products -
Lenneman, E.M., Shappell, N.W. 2011. Estrogenicity of agricultural by-products. Joint Meeting of the Midwest Society of Environmental Toxicology and Chemistry and the Chicago Regional Chapter of Society for Risk Analysis, March 23-24, 2011, Lake Geneva, WI.
Effects of liquid swine manure on dissipation of 17ß-estradiol in soil Reprint Icon -
Zitnick, K.K., Shappell, N.W., Hakk, H., DeSutter, T.M., Khan, E., Casey, F.X.M. 2011. Effects of liquid swine manure on dissipation of 17ß-estradiol in soil. Journal of Hazardous Materials. 186:1111-1117.
Nutrient and Estrogenic Activity of Runoff Post–Application of Animal Waste-Based Fertilizer to Frozen Fields -
Shappell, N.W., Owens, L.B., Shipitalo, M.J. 2010. Nutrient and estrogenic activity of runoff post–application of animal waste-based fertilizer to frozen fields. In: 2010 Portland SETAC North America 31st Annual Meeting Abstract Book. Presentation 372, Page 88.
Comparative Biological Effects and Potency of 17a- and 17ß-Estradiol In Fathead Minnows Reprint Icon -
Shappell, N.W., Hyndman, K., Bartell, S.E., Schoenfuss, H. 2010. Comparative biological effects and potency of 17a- and 17ß-estradiol in fathead minnows. Aquatic Toxicology. 100:1-8. DOI:10.1016/j.aquatox.2010.07.005.
Estrogenic Activity in Runoff – Effect of Animal Waste-Based Fertilizer Application to Frozen Fields -
Billey, L.O., Shipitalo, M.J., Owens, L.B., Shappell, N.W. 2010. Estrogenic activity in runoff – effect of animal waste-based fertilizer application to frozen fields. Midwest Chapter Society of Environmental Toxicology and Chemistry Abstracts, March 24-26, 2010, St. Paul, MN. Available:http://www.midwestsetac.org/2010%20abstracts/Estrogenic%20activity%20in%20runoff%20–%20effect%20of%20animal%20waste-based%20fertilizer%20application%20to%20frozen%fields, %20Billey.pdf.
Estrogenicity and Nutrient Concentration of Surface Waters Surrounding a Large Confinement Dairy Operation Using Best Management Practices for Land Application of Animal Wastes Reprint Icon -
Shappell, N.W., Elder, K.H., West, M.S. 2010. Estrogenicity and Nutrient Concentration of Surface Waters Surrounding a Large Confinement Dairy Operation Using Best Management Practices for Land Application of Animal Wastes. Environmental Science and Technology. 44:2365-2371.
Cytochrome P450 Expression Profile of the PICM-19H Pig Liver Cell Line: Potential Application to Rapid Liver Toxicity Assays. -
Willard, R.R., Shappell, N.W., Meekin, J.H., Talbot, N.C., Caperna, T.J. 2009. Cytochrome P450 expression erofile of the PICM-19H pig liver cell line: Potential application to rapid liver toxicity assays. In Vitro Cellular and Developmental Biology - Animals. 46(1):11-19.
Residue and Food Safety Research at the USDA ARS Animal Metabolism Research Unit -
Smith, D.J., Huwe, J.K., Hakk, H., Shappell, N.W., Shelver, W.L. 2009. Residue and Food Safety Research at the USDA ARS Animal Metabolism Research Unit. In: Proceedings of 4th International Symposium on Recent Advances in Food Analysis, November 4-6, 2009, Prague, Czech Republic. Poster A-54, page 33.
Food Safety Research at USDA: Hormones in Water and POPs in Food -
Huwe, J.K., Shappell, N.W. 2009. Food Safety Research at USDA: Hormones in Water and POPs in Food. In: Proceedings of 4th International Symposium on Recent Advances in Food Analysis, November 4-6, 2009, Prague, Czech Republic. Presentation LS2, page 11.
Estrogenic Activity and Estrogens of Surface Waters in Proximity to a Large Dairy -
Shappell, N.W., Billey, L.O., Elder, K.H. 2009. Estrogenic Activity and Estrogens of Surface Waters in Proximity to a Large Dairy. Society of Environmental Toxicology and Chemistry (SETAC)Abstract Book, New Orleans, LA, November 19-23, 2009. Abstract 31, page 11.
Effects of liquid swine manure on sorption of 17ß-estradiol to soil -
Zitnick, K., Hakk, H., Shappell, N.W., Desutter, T., Casey, F.S., Khan, E. 2009. Effects of liquid swine manure on sorption of 17ß-estradiol to soil. ASA-CSSA-SSSA Annual Meeting, November 1-5, 2009, Pittsburgh, PA. Abstract #52904. Available http://a-c-s.confex.com/crops/ 2009am/webprogram/Paper52904.html.
Development of multi-residue sulfonamide analysis using LC-MS/MS for detection in wastewater and river samples -
Shelver, W.L., Shappell, N.W. 2008. Development of Multi-residue Sulfonamide Analysis Using LC-MS/MS for Detection in Wastewater and River Samples [Abstract]. Society of Environmental Toxicology and Chemistry (SETAC) 29th Annual Meeting Abstract Book, November 16-20, 2008, Tampla, FL. RP117, page 325.
ELISA for sulfonamides and its application for screening in water contamination -
Shelver, W.L., Shappell, N.W., Franek, M., Rubio, F.R. 2008. ELISA for sulfonamides and its application for screening in water contamination. Journal of Agricultural and Food Chemistry 56:6609-6615.
Comment on extraction and purification of isoflavones from soybeans and characterization of their estrogenic activities -
Shappell, N.W. 2008. Comment on extraction and purification of isoflavones from soybeans and characterization of their estrogenic activities. Journal of Agricultural and Food Chemistry 56:3427.
Destruction of estrogens using Fe-TAML/peroxide catalysis -
Shappell, N.W., Vrabel, M.A., Madsen, P.J., Harrington, G.E., Billey, L.O., Hakk, H., Larsen, G.L., Beach, E.S., Horwitz, C.P., Ro, K.S., Hunt, P.G., Collins, T.J. 2008. Destruction of estrogens using Fe-TAML/peroxide catalysis. Environmental Science and Technology 42:1296-1300.
Coupling LC MS-MS analysis of estrogens with E-Screen bioassay in the evaluation of agricultural wastewater -
Shappell, N.W. 2007. Coupling LC MS-MS analysis of estrogens with E-Screen bioassay in the evaluation of agricultural wastewater. Meeting Abstract. 121st AOAC Annual Meeting & Exposition, Sept. 16-20, 2007, Anaheim, CA.
Swine lagoon wastewater treatment in marsh-pond/floating wetland-marsh constructed wetland Reprint Icon -
Hunt, P.G., Poach, M.E., Shappell, N.W., Matheny, T.A., Reddy, G.B., Ro, K.S., Szogi, A.A. 2007. Swine lagoon wastewater treatment in marsh-pond/floating wetland-marsh constructed wetland. In: International Symposium on Air Quality and Waste Management for Agriculture, 16-19 September, Broomfield, Colorado. 7 p. 2007 CDROM.
TISSUE RESIDUES, METABOLISM, AND EXCRETION OF NA[36CL]O3 IN RATS -
Hakk, H., Smith, D.J., Shappell, N.W. 2007. Tissue residues, metabolism, and excretion of Na[36Cl]O3 in rats. Journal of Agricultural and Food Chemistry 55:2034-2042.
ESTROGENIC ACTIVITY AND STEROID HORMONES IN SWINE WASTEWATER PROCESSED THROUGH A LAGOON CONSTRUCTED-WETLAND SYSTEM. -
Shappell, N.W., Billey, L.O., Forbes, D., Poach, M.E., Matheny, T.A., Reddy, G.B., Hunt, P.G. 2007. Estrogenic activity and steroid hormones in swine wastewater processed through a lagoon constructed-wetland system.. Environmental Science and Technology 41(2):444-450.
DEGRADATION OF ESTRADIOL AND ETHINYLESTRADIOL WITH TAML OXIDANT ACTIVATOR AND HYDROGEN PEROXIDE. -
Shappell, N.W., Ro, K.S., Madsen, P., Horowitz, C., Hunt, P.G., Collins, T.J., Vrabel, M. 2006. Degradation of estradiol and ethinylestradiol with taml oxidant activator and hydrogen peroxide. Meeting Abstract. 10th Annual Green Chemistry & Engineering Conference, Washington, DC, June 26-30, 2006.
ESTROGENIC ACTIVITY IN THE ENVIRONMENT: MUNICIPAL WASTEWATER EFFLUENT, RIVER, PONDS AND WETLANDS. -
Shappell, N.W. 2006. Estrogenic activity in the environment: municipal wastewater effluent, river, ponds and wetlands. Journal of Environmental Quality 35:122-132.
ERGOVALINE MOVEMENT ACROSS CACO-2 CELLS. -
Shappell, N.W., Smith, D.J. 2005. Ergovaline movement across CACO-2 cells. In Vitro Cellular and Developmental Biology - Animals 41:245-251.
ESTROGENIC ACTIVITY OF SWINE WASTEWATER TREATED BY A LAGOON CONSTRUCTED WETLAND SYSTEM. -
Shappell, N.W., Billey, L.O., Poach, M.E., Matheny, T.A., Reddy, G.B., Hunt, P.G. 2005. Estrogenic activity of swine wastewater treated by a lagoon constructed wetland system. SETAC North American 26th Annual Conference, Baltimore, MD, Nov. 13-17, 2005.
FATE AND TRANSPORT OF SEX HORMONES FROM POULTRY LITTER APPLIED TO TILL- AND NO-TILL CROPPING SYSTEMS -
Jenkins, M., Endale, D.M., Schomberg, H.H., Sangsupan, H.A., Radcliffe, D.R., Hartel, P.G., Cabrera, M.L., Vencill, W.K., Shappell, N.W. 2004. Fate and transport of sex hormones from poultry litter applied to till- and no-till cropping systems [abstract]. American Society of Agronomy, Agronomy Abstracts. p. 339. CDROM.
TILLAGE AND N-FERTILIZER SOURCE EFFECTS ON YIELD AND WATER QUALITY IN A CORN-RYE SYSTEM -
Endale, D.M., Schomberg, H.H., Jenkins, M., Cabrera, M.L., Radcliffe, D.R., Hartel, P.G., Shappell, N.W. 2004. Tillage and N-fertilizer source effects on yield and water quality in a corn-rye system. Annual Southern Conservation Tillage Conference for Sustainable Agriculture. p. 37-48. CDROM. Raleigh, North Carolina.
ERGOVALINE TRANSPORT ACROSS HUMAN GASTROINTESTINAL CELLS (CACO-2). -
Shappell, N.W., Smith, D.J. 2004. Ergovaline transport across human gastrointestinal cells (caco-2). [abstract] Joint Meeting of American Society of Animal Science, American Dairy Science Association, and Poultry Science Association, St. Louis, MO, July 25-29, 2004, Journal of Animal Science 82(Suppl 1):181, Abstract T71.
ASSESSMENT OF TASCO AND YCWP ON ERGOVALINE TOXICITY IN CACO-2 CELLS. -
Shappell, N.W., Billey, L.O. 2004. Assessment of tasco and ycwp on ergovaline toxicity in caco-2 cells. [abstract] Joint Meeting of American Society of Animal Science, American Dairy Science Association, and Poultry Science Association, St. Louis, MO, July 25-29, 2004, Journal of Animal Science 82(Suppl 1):181, Abstract T72.
ERGOVALINE TOXICITY ON CACO-2 CELLS AS ASSESSED BY MTT, ALMAR BLUE, AND DNA ASSAY. -
Shappell, N.W. 2003. Ergovaline toxicity on Caco-2 cells as assessed by MTT, alamarBlue, and DNA assay. In Vitro Cellular and Developmental Biology-Animal. 39:329-335.
DECAY OF ESTROGENIC ACTIVITY IN MUNICIPAL WASTEWATER LAGOONS. -
Shappell, N.W. 2003. Decay of estrogenic activity in municipal wastewater lagoons. Society of Environmental Toxicology and Chemistry Asia/Pacific & Australasian Society for Ecotoxicology Meeting, Sept. 28-Oct. 2, 2003, Christchurch, New Zealand.
ASSESSMENT OF ESTROGENIC ACTIVITY AND TOXICITY OF RED RIVER WATER. -
Shappell, N.W. 2003. Assessment of estrogenic activity and toxicity of Red River water. [abstract]. 1st International Water Conference, Water Science & Decision-Making, April 23-24, 2003, Moorhead, MN.
COMPARATIVE METABOLISM OF CHRYSENE AND 5-METHYLCHRYSENE BY RAINBOW TROUT AND RAT LIVER MICROSOMES -
Shappell, N.W., Carlino-Macdonald, U., Amin, S., Kumar, S., Sikka, H.C. 2003. Comparative metabolism of chrysene and 5-methylchrysene by rainbow trout and rat liver microsomes. Toxicological Sciences. 72:260-266.
TECHNICAL NOTE: EPERIMERIZATION OF ERGOPEPTINE ALKALOIDS IN ORGANIC AND AQUEOUS SOLVENTS. -
Smith, D.J. and Shappell, N.W. 2002. Technical note: eperimerization of ergopeptine alkaloids in organic and aqueous solvents. Journal of Animal Science 80:1616-1622.
MALFORMATION VERSUS MORTALITY, A STUDY OF NORTHERN LEOPARD FROG DEVELOPMENT IN SITU. -
Shappell, N.W., Garber, E., Gackle, N.J., Canfield, J., Larsen, G.L. 2002. Malformation versus mortality, a study of northern leopard frog development in situ. [abstract]. Minnesota Water 2002 Conference, April 17-20, 2002, St. Cloud, MN.
ASSESSMENT OF PARASITE ABUNDANCE AND HEALTH OF NATIVE FROGS RELATIVE TO SURROUNDING LAND USE IN ND AND MN. -
Gackle, N.G., Shappell, N.W., Grier, J. 2002. Assessment of parasite abundance and health of native frogs relative to surrounding land use in ND and MN. [abstract]. American Society of Ichthyologists & Herpetologists, July 3-8, 2002, Kansas City, MO.
EFFECT OF CLENBUTEROL ON BODY STORES OF POLYCHLORINATED DIBENZOFURANS (PCDFS) AND DIBENZO-P-DIOXINS (PCDDS) IN RATS -
Shappell, N.W., Billey, L.O., Feil, V.J. 2002. Effect of clenbuterol on body stores of polychlorinated dibenzofurans (PCDFs) and dibenzo-p-dioxins (PCDDs) in rats. Journal of Animal Science. 80:2461-2475.
TOXICITY OF ERGOVALINE ON CACO2 CELLS AS ASSESSED BY MTT, ALARMARBLUE, AND DNA ANALYSIS. -
Shappell, N.W. 2002. Toxicity of ergovaline on Caco2 cells as assessed by MTT, alarmarBlue, and DNA analysis. [abstract]. Journal of Animal Science. 80(Suppl 1):30.
MALFORMATION, MORTALITY AND PARASITES IN NORTHERN LEOPARD FROGS IN MN AND ND. -
Shappell, N.W., Gackle, N.J., Canfield, J., Sutherland, D. 2002. Malformation, mortality and parasites in northern leopard frogs in MN and ND. [abstract]. Minnesota Water 2002 Conference, April 17-20, 2002, St. Cloud, MN.
MALFORMATION VERSUS MORTALITY, A STUDY OF NORTHERN LEOPARD FROG DEVELOPMENT IN SITU. -
Shappell, N.W., Garber, E.A., Gackle, N.J., Canfield, J., Larsen, G.L. 2002. Malformation versus mortality, a study of northern leopard frog development in situ. [abstract]. Minnesota Water 2002 Conference, April 17-20, 2002, St. Cloud, MN.
EFFECT OF CLENBUTEROL ON FAT STORES OF DIOXINS AND FURANS IN RATS. -
Shappell, N.W., Billey, L.O., Feil, V.J. 2001. Effect of clenbuterol on fat stores of dioxins and furans in rats. Organohalogen Compounds. 53:460-463.
EFFECT OF RACTOPAMINE ON PCNA, DESMIN, AND MYOSIN EXPRESSION IN C2C12 MOUSE CELLS. -
Shappell, N.W., Larsen, G.L. 2000. Effect of ractopamine on PCNA, desmin, and myosin expression in C2C12 mouse cells. [abstract]. 40th Annual Meeting of the American Society of Cell Biology, Dec. 9-13, 2000, San Francisco, CA. Molecular Biology of the Cell 11(Suppl):408. Abstract No. 2119.
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