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Length of distal segment of RV derivative in addition to the overall morphology of the RV derivative to categorize sub-stages between comma and post-S-shaped RV stages from 30-μm–thick immunostained cryosections
| Renal Vesicle Stage | Total Number of Events | Length of Distal Segment ± SD (μm) |
|---|---|---|
| Early S-shaped body | 19 | 16.23±3.33 |
| Mid S-shaped body | 12 | 24.87±3.25 |
| Late S-shaped body | 19 | 40.57±7.17 |
P<0.05, ANOVA. Significance level was set at 5%.
