title: Fetal defense mechanisms.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology; D001724:Birth Weight; D001853:Bone Marrow / Q000276:immunology; D001854:Bone Marrow Cells; D003165:Complement System Proteins / Q000096:biosynthesis; D005260:Female; D005315:Fetal Diseases / Q000276:immunology; D005333:Fetus / Q000276:immunology*; D005865:Gestational Age; D006801:Humans; D007111:Immunity, Cellular; D007070:Immunoglobulin A / Q000096:biosynthesis; D007072:Immunoglobulin D / Q000096:biosynthesis; D007073:Immunoglobulin E / Q000096:biosynthesis; D007074:Immunoglobulin G / Q000096:biosynthesis; D007075:Immunoglobulin M / Q000096:biosynthesis; D007153:Immunologic Deficiency Syndromes / Q000235:genetics / Q000276:immunology; D007231:Infant, Newborn; D008264:Macrophages / Q000276:immunology; D008431:Maternal-Fetal Exchange; D010587:Phagocytosis; D010950:Plasma Cells / Q000276:immunology; D011247:Pregnancy; D012409:Rubella / Q000276:immunology; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D007070:Immunoglobulin A; D007072:Immunoglobulin D; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007073:Immunoglobulin E; D003165:Complement System Proteins