title: Polyaxial cleavage in sponges (Porifera): a new pattern of metazoan cleavage.
authors.affiliation: Biological Faculty, St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg, 199034 Russia.
authors.forename: A V
authors.initials: AV
authors.lastname: Ereskovsky
mesh_terms: D000818:Animals; D001757:Blastomeres / Q000166:cytology / Q000502:physiology; D002455:Cell Division; D004625:Embryo, Nonmammalian / Q000166:cytology / Q000502:physiology; D011161:Porifera / Q000502:physiology*; D012098:Reproduction / Q000502:physiology