Embryo No. 7802, stage 7, to show the notochordal process, which appears as a clump of cells underlying the middle of the epiblastic plate. Some intra- as well as extra-embryonic mesoblast can be identified. Section 44-3-3.
Fig. 7-9. O'Rahilly and Müller, 1987.
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Keywords: epiblastic plate, extra-embryonic mesoblast, intra-embryonic mesoblast, notochordal process
Source: The Virtual Human Embryo.