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Summary Stage Literature (144) Attributions Wiki
XB-STAGE-17

Name: NF stage 5 (16-cell)

XAO ID: 1000015

Definition: "Nieuwkoop and Faber stage 5, corresponding to an embryo of age 2 hr 45 min at 22-24 Celsius and having the following external morphological criteria: Advanced sixteen cell stage. Dorsal micromeres distinctly smaller and less pigmented than ventral ones. Macromeres entirely separated by cleavage grooves. Length: 1.4 - 1.5 mm."
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Preceded By: NF stage 4 (8-cell) Succeeded By: NF stage 6 (32-cell)