M

A tiny particle made of substances that are soluble in water and that come together to form a ball-like shape. These particles can carry other substances inside … [Read more...]

Any substance or process that kills germs (bacteria, viruses, and other microorganisms that can cause infection and disease). Also called germicide. … [Read more...]

A tiny deposit of calcium in the breast that cannot be felt but can be detected on a mammogram. A cluster of these very small specks of calcium may indicate … [Read more...]

Bacteria and other organisms that live inside the intestines. They help digest food. Vitamins such as biotin and vitamin K are made by microflora. Also called … [Read more...]

An instrument that uses very small amounts of fluid on a microchip to do certain laboratory tests. A microfluidic device may use body fluids or solutions … [Read more...]

One millionth of a gram. … [Read more...]

A measure of volume for a liquid, using the metric system. One microliter is equal to a millionth of a liter. Also called … [Read more...]

Small numbers of cancer cells that have spread from the primary tumor to other parts of the body and are too few to be picked up in a screening or diagnostic … [Read more...]

A concentration of 1/1,000,000 (one millionth) molecular weight per liter (mol/L). … [Read more...]

The amount of a substance equal to a millionth of a mole (a measure of the amount of a substance). Also called … [Read more...]