The average life of a red blood cell is about 120 days.

It is important for body growth and the production of red blood cells.

However, some people must continue to use at least a small amount of the medicine to keep their red blood cells from getting too low.

The red blood cells break down at a faster rate.

Healthy red blood cells last between 90 and 120 days.

A person normally has only one type of red blood cell.

We'll learn more about red blood cells in detail next.

Why, then, was she now unable to make any red blood cells at all?

More red blood cells will be destroyed because of it.

Their bodies lost the ability to produce red blood cells.

But the attrition rate of her red corpuscles is increasing.

Any woman with an active red corpuscle would be.

"And we'll find every red corpuscle has been drained from their blood."

Did my father give me a different sort of red or white corpuscle in my blood?

"It's lentil-shaped and only half the size of the red corpuscles."

There should be one of them to every twenty red corpuscles.

He could not actually get a clear look at the tiling, either, for the red corpuscles were in the way.

Then a platelet went slipping between the red corpuscle and the wall, but very slowly.

Second, the ship was overtaking one red corpuscle after another.

"I suppose you put in new blood as the old red corpuscles break down?"