A lower than normal number of platelets in the blood. Platelets, which are actually fragments of specific types of cells, are necessary for blood to clot. Signs of thrombocytopenia include bruising and bleeding from the nose, into the gastrointestinal tract, etc. Low platelet count.... ↪ Read more

A description of medications developed from an earlier form of the medication. First generation medications were developed from the original form of the drug; second generation medications are adaptations of first generation drugs; third generation drugs are adaptations of second generation, etc.... ↪ Read more

A build-up of bacteria, saliva and food on the teeth which becomes mineralized, forming a hard coating and eventually causing gum disease and tooth loss. See also 'Plaque'.... ↪ Read more

An abnormally high heart rate.... ↪ Read more

Also called 'T lymphocytes'. The type of lymphocyte which is responsible for cell-mediated immunity. T cells may directly kill a cell or produce chemicals called lymphokines that activate macrophages which will kill the cell. Compare with 'B cell'. A population of lymphocytes that moderates cell... ↪ Read more

Throughout the body. Body-wide process (e. g. systemic infection).... ↪ Read more

Pertaining to a joint made up of bone ends covered with cartilage, ligaments, a cavity filled with synovial fluid (joint fluid) and an outside fibrous capsule, e.g. hip joint, elbow joint.... ↪ Read more

An agent that enhances the action of another.... ↪ Read more

producing effects similar to the 'flight or fight' response, which means the body is alerted to a danger of some sort and prepares to basically run or fight. Sympathomimetic effects include increased heart rate, sweating, and increased blood pressure.... ↪ Read more

A condition in which the heart beats very rapidly because of signals coming from the atria (chambers of the heart that receive the blood) or near the junction of the atria with the ventricles (the chambers of the heart that pump the blood to the body or lungs).... ↪ Read more

Having a litter with more than one father (or breeding).... ↪ Read more

A class of antibiotics which contain sulfur. They are bacteriostatic (they stop the growth (reproduction) of bacteria, but do NOT kill them).... ↪ Read more