How do sharks make blood? - a podcast by Dr Chris Smith

We find out how sharks, proud owners of cartilaginous skeletons, make red blood cells without the aid of bone marrow. Plus, we ask whether it's safe to get up close and personal with your television set. Like this podcast? Please help us by supporting the Naked Scientists

Further episodes of Question of the Week, from the Naked Scientists

Further podcasts by Dr Chris Smith

Website of Dr Chris Smith