E. A. Usenik

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Phagocytosis and killing of Staphylococcus aureus by polymorphonuclear leukocytes (PMN) from 8 selenium (Se)-deficient dairy cows from Wisconsin was compared with that in 5 Se-vitamin E injected dairy cows from the same herd. There was no significant difference in the ability of the PMN to phagocytize bacteria. However, PMN of Se-vitamin E injected cows(More)
The purpose of this study was to characterize the pharmacokinetics of a subcutaneously implanted tissue-chamber model. Thermoplastic tissue chambers were implanted in the paralumbar fossae of six steers. Starting 30 days after implantation, the distribution of intravenously administered antipyrine and phenylbutazone into the tissue chambers was studied.(More)
Reserpine was administered to an 8-yr-old Thoroughbred stallion at a dosage of 5 mg subcutaneously (s.c.) every 2 wk for a 2-mo period to control unmanageable behavior. Reserpine produced a satisfactory calming effect that lasted for about 2 wk. After the last injection, the stallion developed penile paralysis and was unable to retract his penis, resulting(More)
T HERE ARE numerous conflicting concepts in respect to the function, fate and life span of lymphocytes.15 Radiation of segments of the wholebody or of lymphocytes in vitro has long been exploited in the study of lymphocytes.69 However, irradiation of the whole-body or segments injures lymphopoietic tissue and the in vitro environment separates the(More)
A phalaris grass (Phalaris caroliniana) caused neurologic signs and lesions in cattle and sheep. The sheep were hyperexcitable and uncoordinated, with severe muscle twitching, stiff gait, and head nodding. The cattle were thin, nervous, and ataxic. One feature of chronic phalaris toxicosis in these cases was onset of signs weeks or months after removal of(More)
Cattle submitted to the University of Minnesota for surgical correction of left displaced abomasum (LDA) were examined for the in vitro phagocytic and bactericidal activities of their polymorphonuclear leukocytes (PMN). The PMN from cattle with LDA with or without concurrent infection had depressed phagocytic function when compared with PMN from healthy(More)