Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red ...

Most cell structures are not visible to the naked eye without using stains for visualization. The stains used in these images highlight how cell biologists use tricks to “see the invisible.” Invite ...

Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a ...

Imagine being able to count the different types of blood cells being formed inside the tiny bones of a mouse and pinpointing the strings and clusters of cells within the bone marrow that are ...

Red blood cells carry oxygen from the lungs around the body. They then carry carbon dioxide from around the body back to the lungs. These cells are an important component of blood. However, a range of ...

Red blood cells transport oxygen throughout your body, including to vital organs and tissues. They also help your body get rid of carbon dioxide. Too little or too many red blood cells may be ...