Nest’s design is philosophically inspired by Angular. At its heart is a dependency injection (DI) engine that wires together ...

Metalloproteins are proteins bound by at least one metal ion. Metal ions are usually coordinated by four sites consisting of the protein’s nitrogen, sulphur and/or oxygen atoms. In metalloenzymes, one ...

Steroid hormones are a group of hormones, derived from cholesterol, from the class of compounds known as steroids. They are secreted by the adrenal cortex, testes and ovaries, and by the placenta ...

Dr. Roach regrets that he is unable to answer individual letters, but will incorporate them in the column whenever possible.