Evidence for the presence in unimmunized mice of two populations of bone marrow derived B lymphocytes, defined by differences in adherence properties.

Animals Antibody Formation Antibody Specificity Antibody-Producing Cells Ascitic Fluid/cytology B-Lymphocytes/immunology Bone Marrow/immunology Bone Marrow Cells Cells, Cultured Chickens/immunology Dinitrophenols/immunology Erythrocytes/immunology Flagella/immunology Germ-Free Life Hemolytic Plaque Technique Immune Adherence Reaction Lipopolysaccharides/immunology Macrophages/immunology Mice Perissodactyla/immunology Polysaccharides, Bacterial Salmonella/immunology Salmonella typhimurium/immunology Sheep/immunology Thymus Gland/abnormalities gamma-Globulins

Dinitrophenols Lipopolysaccharides Polysaccharides, Bacterial gamma-Globulins