title: Microbial defenses of the child and man.
mesh_terms: D000328:Adult; D000367:Age Factors; D000917:Antibody Formation; D000918:Antibody Specificity; D000937:Antigen-Antibody Reactions; D001424:Bacterial Infections / Q000276:immunology; D001770:Blood Bactericidal Activity; D002633:Chemotaxis; D002675:Child, Preschool; D003165:Complement System Proteins; D006801:Humans; D007111:Immunity, Cellular; D007153:Immunologic Deficiency Syndromes / Q000201:enzymology; D007962:Leukocytes / Q000276:immunology; D009895:Opsonin Proteins; D010447:Peptide Hydrolases / Q000378:metabolism; D010587:Phagocytosis
chemical_list: D009895:Opsonin Proteins; D003165:Complement System Proteins; D010447:Peptide Hydrolases