title: [Electron microcopic study on the envelopes of oocytes and eggs of the river perch Perca fluviatilis].
mesh_terms: D000818:Animals; D005260:Female; D005399:Fishes; D005854:Germ Cells / Q000166:cytology*; D006652:Histological Techniques; D008853:Microscopy; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology*
vernacular_title: Elektronenmikroskopische Untersuchungen an den Hüllen der Oozyten und Eier des Flussbarsches Perca fluviatilis.