The proliferative responses of lymphocytes from foetal calves and adult cattle

Veterinary Immunology and Immunopathology
T J Tierney, M W Simpson-Morgan

Abstract

This paper describes the proliferative responses of prescapular lymph lymphocytes and peripheral blood lymphocytes of foetal calves compared with cells of similar origin from adult cattle. Lymph lymphocytes were collected continuously by means of cannulation of efferent lymphatic ducts of the prescapular lymph node of foetal calves and adult cattle. Peripheral blood lymphocytes were collected from the foetus by means of cannulation of superficial veins of the foetus or of the umbilical vessels and from the jugular vein of adults. Foetal lymphocytes in one-way mixed lymphocyte culture stimulated and responded as well as adult lymphocytes. Foetal cells stimulated and responded more to cells from unrelated animals than to cells from their dam. Lymph lymphocytes from foetal calves between 188 and 253 days of gestation proliferated as well as adult lymphocytes and at a high level after stimulation with concanavalin A, phytohaemagglutinin and pokeweed mitogen. Response to stimulation with lipopolysaccharide, soybean agglutinin and wheat-germ agglutinin was variable but generally low and within the same range recorded by adult cells. Proliferation by foetal and adult whole-blood cultures was on occasions as high as that recorded by se...Continue Reading

References

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Jul 1, 1997·Veterinary Immunology and Immunopathology·T J Tierney, M W Simpson-Morgan

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