Skip to main content
. 2020 Feb 17;11(2):203. doi: 10.3390/genes11020203

Figure 1.

Figure 1

Vesicle production and secretion by murine embryos at different developmental stages shown by TEM. (A) Mouse oocyte (left) with magnifications of the production of multivesicular bodies (MVBs) in the cellular cytoplasm (center) and secretion of their content towards the zona pellucida (right). (B) E2.5 embryo (left) with magnifications of the cytoplasm containing MVBs (center) and the secretion of extracellular vesicles (EVs) through the zona pellucida (right). (C) E3.5 mouse embryo (left) showing MVB secreted to the intercellular space. (D) E4.5 blastocyst (left) secreting EVs into the zona pellucida (center) and blastocoel cavity (right). Abbreviations: B, blastomere; bl, blastocoel; O, oocyte; TE, trophectoderm cell; zp, zona pellucida.