title: Fertilization: a comparative ultrastructural review.
mesh_terms: D000818:Animals; D001200:Ascaris; D002459:Cell Fusion; D002843:Chromatin; D002875:Chromosomes; D003593:Cytoplasm; D005260:Female; D005306:Fertilization; D005407:Flagella; D008297:Male; D008540:Meiosis; D008854:Microscopy, Electron; D008928:Mitochondria; D008974:Mollusca; D009940:Organoids; D010060:Ovulation; D010063:Ovum; D011247:Pregnancy; D011817:Rabbits; D012617:Sea Urchins; D013094:Spermatozoa / Q000502:physiology
chemical_list: D002843:Chromatin