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Danio rerio (zebrafish) embryonic development 

Images showing abnormal development due to lithium exposure


Normal development

1 cell

2 cell

4 cell

8 cell

early blastula


late blastula

50% epiboly (side view)

View from animal pole showing embryonic shield at top of image

gastrula stage

24 hour

one day

two day

three day embryos

newly hatched three-day fish


Thanks to Vanderbilt Bruce Appel, Lilianna Solnica-Krezel, and Jimann Shin for their assistance in obtaining the embryos.