Robert Lee Hill

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Aquatic species can be exposed to endocrine disrupting chemicals (EDCs) in wastewater that often includes the weak estrogen, 4-nonylphenol (NP) and the potent estrogen, 17alpha-ethinylestradiol (EE). The goal of the present study was to determine concentration-dependent effects of developmental exposure to NP and EE on gametogenesis, as well as gonad,(More)
In vivo studies of fishes exposed to xenoestrogens have reported vitellogenin (Vtg) induction, ovatestes, altered sex ratios, and impaired reproductive capacity. The objective of this study was to determine concentration dependent effects of a weak estrogen receptor agonist, 4-nonylphenol (NP) and a potent estrogen receptor agonist, 17alpha-ethinylestradiol(More)
The gene encoding the rat Kupffer cell receptor for fucose and galactose (Lehrman, M. A., and Hill, R. L. (1986) J. Biol. Chem. 261, 7419-7425 and Lehrman, M. A., Haltiwanger, R. S., and Hill, R. L. (1986) J. Biol. Chem. 261, 7426-7432) has been isolated and characterized. The nucleotide sequence of the 9.7-kilobase gene and of 1 kilobase of 5'-flanking(More)
Addition of N-acetylgalactosamine to threonine and serine is the first step in the synthesis of O-glycosidically linked oligosaccharides. A UDP-N-acetyl-D-galactosamine:polypeptide N-acetylgalactosaminyltransferase (EC 2.4.1.41) from porcine submaxillary glands was recently purified to electrophoretic homogeneity, and polyclonal antibodies against the(More)
The Lewis blood group-specified N-acetylglucosaminide alpha 1 goes to 4 fucosyltransferase and an N-acetylglucosaminide alpha 1 goes to 3 fucosyltransferase have been copurified over 500,000-fold from human milk by affinity chromatography on GDP-hexanolamine agarose. The purified enzyme preparation migrates as two major bands on sodium dodecyl(More)
Antibodies prepared against enzymatically deglycosylated porcine submaxillary gland mucin (apomucin), which were unreactive with native mucin and its partially deglycosylated derivatives, were used to immunolocalize apomucin in situ. Electron microscopy of sections of Lowicryl K4M-embedded tissue reacted successively with antibodies and protein A-gold(More)