Mouse E14 sectioned microCT Movie

Embryology - 4 Dec 2023 Expand to Translate
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<html5media height="570" width="330">File:Mouse_embryo_E14_microCT_04.mp4</html5media>

Mouse embryo, Theiler Stage 22

Fingers separate distally
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.
Embryonic age = 14 dpc (range 13.5-15 dpc)
56-60 somite pairs
Equivalent Witschi Stage in rat = 31
Equivalent Carnegie Stage in humans = 20-23

Reference

<pubmed>19545439</pubmed>| PMC2717911 | BMC Physiol.

Copyright

© 2009 Metscher; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

IKI stain - 1% iodine metal (I2) + 2% potassium iodide (KI) in water.