Sperm incorporation, the pronuclear migrations, and their relation to the establishment of the first embryonic axis: time-lapse video microscopy of the movements during fertilization of the sea urchin Lytechinus variegatus.
D000818:Animals; D002467:Cell Nucleus / Q000502:physiology; D004625:Embryo, Nonmammalian / Q000166:cytology / Q000502:physiology*; D005260:Female; D005306:Fertilization; D007700:Kinetics; D008297:Male; D010063:Ovum / Q000502:physiology*; D012617:Sea Urchins / Q000502:physiology; D013094:Spermatozoa / Q000502:physiology*; D013997:Time Factors