The various forms of vitamin K are all fat-soluble molecules, each with the same methylated naphthoquinone ring structure. The two main forms of vitamin K are vitamin K1 and vitamin K2.

Collagen IV provides crucial structural support for cells and tissues, but it’s unstable at body temperature. Researchers now ...

Researchers have long known that the chemical structure of the molecules we inhale influences what we smell. But in most cases, no one can figure out exactly how. Scientists have deciphered a few ...