Healthy red blood cells are puffy with a dimpled middle. “It’s just a really cool shape,” says Velia Fowler, a cell biologist at The Scripps Research Institute in San Diego. For decades, researchers ...

These red blood cells can’t live as long as healthy red ... Get immediate medical treatment when you feel ill. Keep a cool body temperature when exercising in hot and humid conditions.

Hiding those red blood cells can double or triple the transparency ... Still, having a transparent body is pretty cool, on land or sea.

To better understand this phenomenon, Johnsen and colleagues tracked the red blood cells circulating throughout ... "How are glassfrogs doing that? The cool thing is that we just don't know." ...

One of the blood tests showed that his red blood cells are too big. The nurse said it happens when you drink too much. What causes that? Is it dangerous? Unless it is quite severe, macrocytosis ...