title: [Larval cells of sponge Halisarca dujardini (Demospongiae, Halisarcida). I. Separation of the cells and their aggregation properties].
abstract: The majority of Demospongia members have a parenchymula larva, whose inner cells are similar to definite sponge cells. There are some contradictory opinions about the structure of larva in the marine sponge Halisarca dujardini: some authors deny the presence of inner cells, while other investigators consider this larva as a real parenchymula. We defined the larval cell types by cell separation in the percoll gradient and analysed their morphology and behaviour. The results showed the existence of 6 cell types in the parenchymula larva of H. dujardini, including 2 types of external flagellated cells. Each cell category differs in its morphology and aggregation ability.
authors.forename: Iu I
authors.initials: IuI
authors.lastname: Mukhina
authors.forename: O I
authors.initials: OI
authors.lastname: Podgornaia
authors.forename: S M
authors.initials: SM
authors.lastname: Efremova
mesh_terms: D000818:Animals; D002449:Cell Aggregation; D005407:Flagella; D007814:Larva / Q000033:anatomy & histology / Q000502:physiology; D011161:Porifera / Q000033:anatomy & histology* / Q000502:physiology