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

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Science  11 Feb 1972:
Vol. 175, Issue 4022, pp. 652-654
DOI: 10.1126/science.175.4022.652


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.