title: Natural contraceptive biologic foam.
mesh_terms: D002467:Cell Nucleus; D003267:Contraception; D003593:Cytoplasm; D005122:Exudates and Transudates; D005260:Female; D005547:Foreign Bodies; D006801:Humans; D007434:Intrauterine Devices; D008264:Macrophages; D008297:Male; D012157:Mononuclear Phagocyte System / Q000502:physiology; D010063:Ovum; D010587:Phagocytosis; D012156:Reticulocytes / Q000254:growth & development; D013094:Spermatozoa; D013194:Staining and Labeling; D014599:Uterus / Q000166:cytology* / Q000378:metabolism / Q000502:physiology