title: Effect of A. laidlawii on murine and human lymphocyte cultures.
abstract: Heat-inactivated A. laidlawii (AL) was found to be a potent mitogen for mouse spleen cells. Spleen cells from homozygous nude mice and spleen cells treated with anti-theta serum and complement responded as well as their respective controls, indicating that AL represented a B-cell mitogen for mouse spleen cells. Spleen cells from LPS-unresponsive C3H/Hej mice responded well to AL. The peripheral blood leucocytes from unselected human donors were also stimulated by AL, which appeared to represent a T-cell mitogen for human leucocytes. However, the possibility that it acted as a specific antigen could not be excluded. Attention was drawn to the possibility that the presence of mycoplasma might considerably affect the results of tests where tissue-culture cells or derivatives thereof are added to leucocyte cultures.
mesh_terms: D000128:Acholeplasma laidlawii / Q000276:immunology*; D000818:Animals; D000961:Antilymphocyte Serum; D003165:Complement System Proteins; D006801:Humans; D066298:In Vitro Techniques; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000276:immunology*; D051379:Mice; D008934:Mitogens; D013154:Spleen / Q000166:cytology
chemical_list: D000961:Antilymphocyte Serum; D008934:Mitogens; D003165:Complement System Proteins