Sunday, November 20, 2011

Thankful Day #14

Thankful Day #14: I am thankful for horseshoe crabs. Although they aren't really crabs (they're more closely related to ticks and spiders), the blood of this oldest living species has saved more human lives than any other animal. A product of their blood, you see, is used to ensure that injectable medications are not contaminated with bacteria, viruses or fungi.

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