3. Blood Disorders. Blood disorders such as hemophilia and leukemia can cause unexplained bruising, often because your blood fails to clot properly. If you have severe and frequent unexplained bruising, it's a good idea to see a physician to rule out such disorders, especially if it seemed to come on suddenly.
Puffer fish contain the potent neurotoxin tetrodotoxin. TTX is thought to be synthesized by a bacterial or dinoflagellate species associated with the puffer fish. The toxin is concentrated in the liver, gonads, and skin. The level of toxicity is seasonal, and, in Japan, fugu is served only from October through March.
Copperhead Facts: An enzyme in the venom of copperheads has been discovered to inhibit the growth of cancer cells. This enzyme, called contortrostatin, is being studied for further usage in human medicine. This snake gets its name from the unique copper hue present on the scales of its head.n enzyme in the venom of copperheads has been discovered to inhibit the growth of cancer cells. This enzyme, called contortrostatin, is being studied for further usage in human medicine. This snake gets its name from the unique copper hue present on the scales of its head.