and changes in skin color and temperature. A blood clot in a blood vessel of an arm or leg vein can cause swelling of that affected limb. This swelling—known as edema—is caused by a blood clot ...

Here we present a series of remarkable microscope views of various stages in cancer growth and angiogenesis, or growth of new blood vessels ... The images, some color and some black-and-white ...

Cells at the wall of the blood vessels, called endothelial cells (vanilla color) move and invade new tissue through projections led by the stalk and tip cells. The image also shows pericytes in ...