Biology on Instagram: "At 72 hours of incubation, the chick embryo's cardiovascular system is dynamic and visibly functioning. The translucent body allows for observation of the beating heart and surrounding vasculature, which appears as a branching network across the yolk sac. Special techniques, such as injecting ink into the blood vessels, are used to enhance the visual contrast and clarity of the system. 📹 by nikonmicroscopesolutions (yt) #chickembryo #chickenembryo #vetmedicine #developmen