Low potassium levels can cause leg cramps. Apple cider vinegar is high in potassium and this tonic should help quickly if your leg cramps are caused by low potassium: Mix 2 teaspoons apple cider vinegar, 1 teaspoon honey in a glass of warm water and drink.
The hammerhead ribozyme is a RNA molecule motif that catalyzes reversible cleavage and joining reactions at a specific site within an RNA molecule.
Hammerhead shark (family Sphyrnidae), any of eight shark species belonging to the genera Sphyrna (with seven species) and Eusphyrna (with one species), which are characterized by a flattened hammer- or shovel-shaped head, or cephalofoil. Hammerhead sharks, or sphyrnids, are perhaps the most distinctive and unique of all sharks.