Red blood cells are too small to contain blood vessels. They are cells and they travel in blood vessels.
so that they can fit through blood vessels
they are blood vessels that reachout to the cells
they are blood vessels that reachout to the cells
capilaries
Blood vessels can form new blood vessels, this is called angiogenesis.
The blood vessels you speak of are called capillaries (I think)
It is known as Thallesemia.
capillaries are the smallest of the blood vessels. They connect the arterial system to the venous system and are the site of interaction between the blood and the rest of your body
Capillaries. They're so small that red blood cells are sometimes forced to travel single-file.
Capillary vessels.
mast cells