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. 2022 May 2;39(5):1011–1025. doi: 10.1007/s10815-022-02438-8

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Fig. 1 — A Electron microscopy image of a bovine TZP terminus, the bulged portion held in place by microvilli (MV). Numerous extracellular vesicles (EVs, spheres about 50 nm in diameter) are visible. The projection terminus contains electron-dense structures. B Schematic representation of material movement through a TZP terminus. Transcripts (mRNA) could be transferred to the oocyte or translated polyribosomes, and proteins could be transferred. Small molecules could be transferred through gap junctions