Color can change with blood flow or how new ... The separation of the endometrium from the uterine wall can tear small blood vessels. They bleed, and clots form to stop the bleeding.

These colour changes may be harder or easier to ... experts "don't fully understand" the cause of Raynaud’s attacks but "blood vessels in the hands and feet appear to react too strongly to ...

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 ...

Or it can block a blood vessel in the heart and cause a heart ... Its symptoms may include: Pain in the upper right part of your belly Yellow color in your skin and the whites of your eyes ...