Add to Lightbox
The structure of a vein. A longitudinal section of the vein has been removed to reveal its inner structure. A close-up of the venous valve is shown. Royalty Free
MedicalRF.com/Visuals Unlimited, Inc.
all images © Visuals Unlimited
Visuals Unlimited, Inc. specializes in, microscopy, healthcare, medical, wildlife, underwater, agriculture, and science stock photography.