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(RAP-uh-MY-sin)
![](https://webarchive.library.unt.edu/eot2008/20081103224050im_/http://www.cancer.gov/images/spacer.gif)
| A drug used to prevent the rejection of organ and bone marrow transplants by the body. Rapamycin is an antibiotic that blocks a protein involved in cell division and inhibits the growth and function of certain T cells of the immune system involved in the body's rejection of foreign tissues and organs. It is a type of immunosuppressant and a type of serine/threonine kinase inhibitor. Rapamycin is now called sirolimus. |
Previous Definitions: | raltitrexed, randomization, randomized clinical trial, ranpirnase, Rapamune | Next Definitions: | rapid eye movement sleep, rapid hormone cycling, rapid-onset opioid, Raptiva, ras gene |
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