title: Ultrastructural aspects of fertilization in the domestic pig: sperm penetration and pronucleus formation.
mesh_terms: D000818:Animals; D002462:Cell Membrane; D002467:Cell Nucleus; D002843:Chromatin; D002875:Chromosomes; D003593:Cytoplasm; D004721:Endoplasmic Reticulum; D005260:Female; D005306:Fertilization; D008297:Male; D008540:Meiosis; D008566:Membranes; D008854:Microscopy, Electron; D008870:Microtubules; D008928:Mitochondria; D006080:Ovarian Follicle / Q000166:cytology; D010063:Ovum / Q000166:cytology*; D010587:Phagocytosis; D013094:Spermatozoa / Q000166:cytology*; D013552:Swine / Q000502:physiology*
chemical_list: D002843:Chromatin