F

Fibrinolysins.

These are special proteins in the blood of all normal persons that help blood clots that formed dissolve.

Flow Cytometry.

This is a laboratory method where blood is placed into a machine that separates blood cells by size, shape, density and epitope (antennae) on their surface. The immunophenotype assay and the NK assay are tested by using this machine. Each cell in the machine passes a laser eye and the reflected light is analyzed by the machine. Each type of cell reflects light differently. An NK ( CD 56+) cell gives a different reflection than a B cell (CD 19+).

Follicle Stimulating Hormone (FSH).

This brain hormone is produced in the pituitary gland deep in the brain. It is responsible for making the ovary grow and produce eggs. It is also important in telling the ovary when to release the egg (ovulate) and when to begin the production of estrogen by the ovary. In the male FSH does a similar thing to the testicles. It stimulates them to produce and to release the sperm to the site where they are ready to be ejaculated.