title: Interleukin 2 (IL-2) production by mitogen stimulated bovine peripheral blood lymphocytes and its assay.
abstract: Culture medium from bovine peripheral blood mononuclear cells stimulated with the mitogens phytohaemagglutinin (PHA) or Concanavalin A (Con A) was found to maintain the proliferation of Con A blasts in vitro. The factor responsible for this activity was not absorbable with bovine erythrocytes or fresh peripheral blood lymphocytes but was removed by Con A blasts. Production of this factor was dependent on the dose of mitogen used and was greatest after 24 h culture compared to 48 h. Quantitative determinations of factor activity in supernatants were carried out by regression analysis of logit transformed data from assays measuring the maintenance of Con A blast proliferation by supernatants.
mesh_terms: D000818:Animals; D002417:Cattle; D003208:Concanavalin A / Q000494:pharmacology; D066298:In Vitro Techniques; D007376:Interleukin-2 / Q000032:analysis / Q000096:biosynthesis*; D008213:Lymphocyte Activation; D010835:Phytohemagglutinins / Q000494:pharmacology; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D007376:Interleukin-2; D010835:Phytohemagglutinins; D003208:Concanavalin A