title: New ultrastructural data on the morphogenesis of the test in the testacean Arcella vulgaris.
abstract: Transmission electron microscopic studies of dividing Arcella vulgaris Ehrbg. have shown that:
authors.affiliation: Zoologie et Protistologie, Université Blaise Pascal Clermont II, Aubière Cedex, France.
authors.forename: J P
authors.initials: JP
authors.lastname: Mignot
authors.forename: I B
authors.initials: IB
authors.lastname: Raikov