Friday, December 7, 2007

Birdbone

So if humans make blood cells in their marrow, and the marrow is in the bone, where do birds make blood cells? Aren't their bones hollow for flight? They have such high metabolic demands, with increase energy and waste production, they must have hardy blood cells. Where is bird blood made?

Update: Kyle, a friend studying cancer (and obviously, more bird biology than me), explains why B-cells are called B-cells.

No comments: