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| Day 1 chick embryo, Hamburger & Hamilton's stage 4. | H & H stage 11 embryo with visible somites. | Stage 20 chick embyo. Image displays developing limb buds. |
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| H & H stage 25 embryo with continued limb formation. | Stage 25 embryo with noticeable eye development. | H & H stage 26 embryo. Hind limb buds are well presented. |
created by Lauren Fety
Developmental Biology, Swarthmore College, Spring 2004