title: Experimental studies on amphibian oocyte nuclei. I. Investigation of the structure of the nuclear membrane by means of the electron microscope.
authors.forename: H G
authors.initials: HG
authors.lastname: CALLAN
authors.forename: S G
authors.initials: SG
authors.lastname: TOMLIN
mesh_terms: D000663:Amphibians; D002467:Cell Nucleus; D004583:Electrons; D009685:Nuclear Envelope; D009865:Oocytes; D010063:Ovum