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Science 11 February 1972:
Vol. 175. no. 4022, pp. 652 - 654
DOI: 10.1126/science.175.4022.652
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Articles

Membrane Continuity between Plasmalemma and Nuclear Envelope in Spermatogenic Cells of Blasia

Zane B. Carothers 1

1 Department of Botany, University of Illinois, Urbana 61801

Ultrastructural study of liverwort antheridia showed that the spherical nuclei of some late-stage androgonial cells lie close to or appressed to the cell walls. In some cells the outer membrane of the nuclear envelope curves toward the wall and continues without interruption around the cell periphery as the plasmalemma. Subject to its confirmation as a natural occurrence, this evidence appears to support Robertson's concept of cellular organization.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)