Quickening
The moment during pregnancy when the baby is first felt to move.
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- Quiescence
Inactivity, quietness. In cells, quiescence is the state of not dividing. In neurons (nerve cells), quiescence is the state of not firing. The word comes from the Latin “quiescere”, to become quiet. Quiescence suggests a temporary cessation of activity.
- Quiescent
Inactive, resting. For example, tuberculosis can be a quiescent (inactive) infection.
- Quinacrine
An antimalarial drug and, in cytogenetics, a fluorescent dye used to stain chromosomes. The Y chromosome stains brilliantly with quinacrine.
- Quincke's disease
This is angioneurotic edema (or angioedema), a form of localized swelling of the deeper layers of the skin and fatty tissues beneath the skin. Hereditary angioneurotic edema (or hereditary angioedema) is a genetic form of angioedema. Persons with it are born lacking an inhibitor protein (called C1 esterase inhibitor) that normally prevents activation of a […]
- Quinine
The original antimalarial agent, quinine took its name from the Peruvian Indian word “kina” meaning “bark of the tree” referring to the cinchona tree. From this tree, quinine was first obtained. The Peruvian Indians called it “the fever tree.” Quinine, a large and complex molecule, is the most important alkaloid found in cinchona bark. Until […]