title: Evidence of interleukin-1-like activity associated with bovine serum albumin.
abstract: Little information is available concerning the "spontaneous" Interleukin-1 (IL-1) which occurs in vivo without apparent stimulation. Although PHA and con A-suboptimally induced, and PPD-induced, lymphocyte responses in 0.25% BSA containing serum-free medium were markedly depressed when Mø was depleted, there was no significant reduction of the response of Mø-depleted lymphocytes in 2% BSA. In addition, lymphocyte transformation in 2% BSA exhibited enhancement of response of Mø-depleted lymphocytes when compared to the response of Mø-depleted lymphocytes in 0.25% BSA. These observations indicate that an IL-1-like activity is not only found in normal bovine serum but also may have an in vivo function modulating lymphocyte response to antigen.
mesh_terms: D000818:Animals; D002417:Cattle; D002469:Cell Separation; D006801:Humans; D007375:Interleukin-1 / Q000494:pharmacology*; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000166:cytology / Q000276:immunology; D008264:Macrophages / Q000166:cytology / Q000276:immunology; D012710:Serum Albumin, Bovine / Q000494:pharmacology*
chemical_list: D007375:Interleukin-1; D012710:Serum Albumin, Bovine