A unit used to measure the activity of many vitamins, hormones, enzymes, and drugs. An International Unit is the amount of a substance that has a certain … [Read more...]
I
internist
A doctor who specializes in internal medicine. An internist works with adult patients to prevent, diagnose, and treat diseases without using surgery. … [Read more...]
interstitial cell-stimulating hormone
A hormone made in the pituitary gland. In females, it acts on the ovaries to make follicles release their eggs and to make hormones that get the uterus ready … [Read more...]
interstitial radiation therapy
A type of internal radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into a tumor or body tissue. … [Read more...]
intervention
In medicine, a treatment or action taken to prevent or treat disease, or improve health in other ways. … [Read more...]
intervention group
The group receiving the study agent that is being tested in a clinical trial or clinical study. … [Read more...]
intestinal
Having to do with the intestines. … [Read more...]
intestinal flora
Bacteria and other organisms that live inside the intestines. They help digest food. Vitamins such as biotin and vitamin K are made by intestinal flora. Also … [Read more...]
intestinal microflora
Bacteria and other organisms that live inside the intestines. They help digest food. Vitamins such as biotin and vitamin K are made by intestinal microflora. … [Read more...]
intestinal villi
Tiny hair-like projections that line the inside of the small intestine. They contain blood vessels and help absorb nutrients. … [Read more...]