Solubilization of a human lymphocyte factor for autorosette.
With incubation at 45 degrees C, human peripheral blood lymphocytes (PBL) loose 80% of their capacity to form 1-hr autorosettes (AR). However, the addition of supernatant from heated lymphocytes (SHL) restores 93% of their rosette-forming capacity, while producing an inhibitory effect on nonincubated lymphocytes. A soluble factor present in SHL is active to a 1/5000 dilution; is absorbable on autologous red blood cells but not on sheep red blood cells; is RNase and DNase resistant and sensitive to trypsin and pronase; and acts variably on allogenic cells.
D000818:Animals; D004912:Erythrocytes / Q000276:immunology; D006801:Humans; D007700:Kinetics; D008214:Lymphocytes / Q000276:immunology*; D012397:Rosette Formation; D012756:Sheep; D012995:Solubility; D013696:Temperature