title: Role of macrophages in the development of immunological maturity in rat.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000921:Antibody-Producing Cells; D004912:Erythrocytes / Q000276:immunology; D006460:Hemolysin Proteins / Q000096:biosynthesis; D006462:Hemolytic Plaque Technique; D007109:Immunity; D007111:Immunity, Cellular; D008264:Macrophages / Q000276:immunology*; D010537:Peritoneum / Q000166:cytology; D051381:Rats; D012756:Sheep; D013154:Spleen / Q000276:immunology
chemical_list: D006460:Hemolysin Proteins