Injecting an Egg Yolk with Ink Reveals the Embryo Hidden Inside

Here’s a neat video showing ink being injected into the “yolk sac artery of 72 hour-old chick embryo to visualize the beating heart and the vasculature.” It’s from Nikon’s Small World in Motion competition which is always a great source for videos that reveal the previously unseen. Watching the ink spread throughout the yolk in this video shows how it’s all connected.


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This pretty much proves life starts at conception.