Ultrastructure of egg envelopes in self-sterile and self-fertile species of tunicates.
D000818:Animals; D002462:Cell Membrane / Q000166:cytology*; D002816:Chordata, Nonvertebrate / Q000166:cytology*; D005260:Female; D005306:Fertilization; D066298:In Vitro Techniques; D007247:Infertility, Female; D008566:Membranes / Q000166:cytology*; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology*