December 21, 2017

Maybe “lick your wounds” isn’t just an expression

Licking an actual wound might be advantageous. (But maybe don’t do it just yet.) There’s all sorts of stuff in saliva.  Caterpillars can produce silk with their salivary glands!  Snakes have venomous saliva they can inject with fangs!  People aren’t as exciting, our saliva’s got minerals, digestive enzymes, microorganisms, antibodies and proteins.  One of these proteins, histatin-1,...
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