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Production of benzodiazepine-like compounds in bovine rumen.

The presence of benzodiazepine-like molecules was detected radioimmunologically in bovine rumen contents and in incubates of ruminal contents with homogenates of several common grasses. A similar production was found "in vivo" in samples obtained from a grazing cow with a rumen cannula.

Animals↗

Partial characterization of an erythropoiesis inhibitory factor.

An inhibitory factor of erythropoiesis, obtained from normal human urine, is indicated to be a complex of a fragment of alpha 1-acid glycoprotein and prostaglandin F2 alpha. Immunoelectrophoresis reveals two protein components in the EIF complex which separate during acrylamide gel electrophoresis. A gamma-globulin (MW 185,000) is a carrier of the complex. A fragment of alpha 1-acid glycoprotein (MW 9300) retains the inhibitory factor, PGF2 alpha. Noncovalent forces bind the PGF2 alpha to the protein, and PGF2 alpha can be extracted with benzene.

Blood Proteins↗