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| A grazing section through the edge of the nuclear envelope. This illustrates nuclear envelope pores (nep) in face view. Polysomes (arrows), chains of ribosomes, are bound to the outer membrane of the nuclear envelope showing that this membrane is equivalent to rough ER as a site of protein synthesis for translocation across the membrane or for membrane protein synthesis. EM taken on 2/5/72 by R. Allen with Hitachi HU11A TEM. Neg. 28,500X. Bar = 0.2µm. |
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