Today, the embryos are 13 days old. In another week, heart tubes will begin to fuse, divisions of future vertebrae will appear, and a neural groove (future spinal cord) will form with a brain bulge at one end. Exciting, isn't it? :)

Well, I could probably ramble for hours, but I will pause for now...
LINK OF THE DAY: Want some useless knowledge?
Until tomorrow,
Dave T.
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