Horseshoe Crab, Limulus polyphemus

An icon of the New England icon, the horseshoe Crab is basically a living trilobyte. If you've ever had a flu shot, know someone with a pace maker or joint replacement, or have given your pet a rabies vaccination, you owe a debt of gratitude to the horseshoe crab. Vaccines, injectable drugs, intravenous solutions, and implantable medical devices, both for humans and animals, are quality checked for safety using a test that comes from the blood of horseshoe crabs! Notecard measures 4 1/2" x 5 1/2," includes an envelope, and comes in a clear plastic sleeve.