title: IgM-IgG1, 2, 3 relationship during pregnancy.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006462:Hemolytic Plaque Technique; D007114:Immunization; D007074:Immunoglobulin G / Q000032:analysis; D007136:Immunoglobulins / Q000032:analysis*; D051379:Mice; D011247:Pregnancy; D011270:Pregnancy, Animal; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000276:immunology
chemical_list: D007074:Immunoglobulin G; D007136:Immunoglobulins