Ralph Hutchings Portfolio
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Human heart circulation. Resin cast views of the coronary arteries (red) and veins (blue). The coronary arteries branch into the smaller arterioles and capillaries which supply the heart muscle with oxygen-rich blood.
Ralph Hutchings/Visuals Unlimited, Inc.
all images © Visuals Unlimited
Visuals Unlimited, Inc. specializes in, microscopy, healthcare, medical, wildlife, underwater, agriculture, and science stock photography.