![](https://webarchive.library.unt.edu/eot2008/20090514034109im_/http://www.cancer.gov/images/spacer.gif) |
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(pro-JES-tin)
![](https://webarchive.library.unt.edu/eot2008/20090514034109im_/http://www.cancer.gov/images/spacer.gif)
| Any natural or laboratory-made substance that has some or all of the biologic effects of progesterone, a female hormone. |
Previous Definitions: | progesterone, progesterone receptor, progesterone receptor negative, progesterone receptor positive, progesterone receptor test | Next Definitions: | prognosis, prognostic factor, programmed cell death, progression, progression-free survival |
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![](https://webarchive.library.unt.edu/eot2008/20090514034109im_/http://www.cancer.gov/images/spacer.gif) |