Medical: A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z

Y (in chemistry)

The symbol for the element yttrium, an ultrarare metal named after Ytterby in southern Sweden. Yttrium has been used in certain nuclear medicine scans.

Y (in genetics)

The Y chromosome, the sex chromosome found in normal males, together with an X chromosome.

Y chromatin

A brilliantly fluorescent body seen under the microscope in cells containing a Y chromosome when the cells are stained with the dye quinacrine. Quinacrine lights up the Y chromosome more than other chromosomes.

Yttrium Y 90 ibritumomab tiuxetan

An anticancer therapy that is a combination of the radioisotope yttrium-90 and a monoclonal antibody to produce substances that locate and bind to cancer cells. Also called IDEC-Y2B8 monoclonal antibody.

Yttrium

A rare elemental metal. A radioactive form of yttrium is used in radiation therapy and some types of immunotherapy.

Youth violence

Violence involving young persons, typically children, adolescents, and young adults between the ages of 10 and 24. The young person can be the victim, the perpetrator, or both. Youth violence includes aggressive behaviors such as verbal abuse, bullying, hitting, slapping, or fistfighting. These behaviors have significant consequences but do not generally result in serious injury […]

Yolk stalk

most commonly as a finger-like protrusion from the small intestine known as Meckelis diverticulum. Found in 2 to 4 percent of people, Meckelis diverticulum may become inflamed (much like the appendix) and require surgical removal. Also known as the omphalomesenteric duct, umbilical duct, or vitelline duct.

Youth

The time between childhood and maturity.

Yolk sac

Not all yolk has to do with birds’ eggs. Human embryos have a yolk sac, too. The human yolk sac is a membrane outside the embryo that is connected by a tube (the yolk stalk) though the umbilical opening to the embryo’s midgut. The yolk sac serves as an early site for the formation of […]

Yogurt

A dairy product made by fermented milk with one or more bacterial cultures. It has been used to repopulate the normal bacterial flora of the intestines after antibiotic therapy and associated diarrhea and for treating and preventing vaginal yeast and bacterial infections.

Page 1 of 512345