They can also kill by releasing into target cells molecules that lead to apoptosis—programmed cell death. In this colored scanning electron micrograph (SEM), a tissue macrophage and a red blood ...

This digitally colorized scanning electron micrograph (SEM) revealed some of the comparative ultrastructural morphology between normal red blood cells (RBCs), and a sickle cell RBC (left) found in ...

Background —A suboptimal haematological status has often been recorded in athletes involved in intensive physical activity. There have even been reports of “sports anaemia” associated with intensive ...

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Glassfrogs make themselves transparent while they rest by taking red blood cells from circulation and concealing them in their livers. A multi-disciplinary team of biologists and biomedical ...

A red blood cell count test gives the correct number of red blood cells in your body. Learn about how the test is done, why it is done, risks, and more.

Scientists have transfused lab-made red blood cells into a human volunteer in a world-first trial that experts say has major potential for people with hard-to-match blood types or conditions such ...

Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years, ...

The blood type of B negative is also uncommon, occurring in "2% of Caucasian, 1% of African American, 0.4% of Asian and 1% of Latino American" populations, says the Red Cross.

An RBC count is used to find out how many red blood cells you have. Learn why your doctor might order one, how it’s performed, and what results mean.