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Ontology Definition: TS22

Theiler Stage 22 - Fingers separate distally

ts22_1 Individual fingers are visible in the anterior footplate and there are deep indentations between the toes which are not yet separated. The long bones of the limbs are present and there are hair follicles in the pectoral, pelvic and trunk regions. The pinna is turned forwards and the umbilical hernia is conspicuous.

Absent: hair follicles in the cephalic region.

ts22_2

14 dpc (range 13.5-15)
56-~60 somite pairs
Witschi Stage 31 (rat)
Carnegie Stage 20 (atlas), 21 (atlas), 22 (atlas), 23 (atlas), (human - stage table)

All scale bars in microns.
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