Tonsil stones are small, hard lumps that form when debris becomes trapped in pockets in the tonsils. They are made of hardened minerals, food particles, and bacteria. While tonsil stones are generally ...

Garnets are a set of closely related minerals that form a group, resulting in gemstones in almost every color ... All garnets have essentially the same crystal structure, but they vary in chemical ...

Wearing an emerald was believed to reveal the truth or falseness of a lover’s oath as well as make one an eloquent speaker. Legend also states that emerald was one of the four precious stones given by ...

In brain tumours, immune cells called macrophages scavenge lipid debris from the myelin sheath of neurons. These lipid-laden macrophages cause immunosuppression, and their transfer of lipids to ...