Isolation of subpopulations of lymphocytic cells by the use of isotonically balanced solutions of Ficoll. I. Development of methods and demonstration of the existence of a large but finite number of subpopulations.

Animals Centrifugation, Density Gradient Erythrocytes/immunology Hemolytic Plaque Technique Immunization Isotonic Solutions Lymph Nodes Lymphocytes/growth & development Male Rats Sheep Spleen Thymus Gland

Isotonic Solutions