Why aren't blood donations rejected?

We find out why blood donations aren't rejected more readily. Plus we ask, is sleepiness related to cheerfulness?

14 January 2013

Presented by Hannah Critchlow.

Bags of donated blood

Bags of blood collected during donation, showing dark colour of venous blood.

Credit:

CC-BY-SA - Antonio @ flickr

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We find out why blood donations aren't rejected more readily. Plus we ask, is sleepiness related to cheerfulness?

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