HORSESHOE CRAB ANATOMY
**BACKGROUND MUSIC**
"Eight Miles High"
The Byrds
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Limulus polyphemus (top)
Limulus polyphemus (underside)
"The medical profession uses an extract from the horseshoe crab's blue, copper-based blood called lysate to test the purity of medicines? It's blood is also used to detect the presence of bacteria in medical supplies. Certain properties of the shell have also been used to speed blood clotting and to make absorbable sutures."
