![](https://webarchive.library.unt.edu/eot2008/20090514050042im_/http://www.cancer.gov/images/spacer.gif) |
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(VIS-koh-TOK-sin)
![](https://webarchive.library.unt.edu/eot2008/20090514050042im_/http://www.cancer.gov/images/spacer.gif)
| A member of a group of small proteins produced by mistletoe plants that are able to kill cells and may stimulate the immune system. |
Previous Definitions: | virus replication cycle, virus-neutralizing antibody, viscera, visceral, visceral peritoneum | Next Definitions: | visilizumab, visual analog scale, visual pathway glioma, vital, vitamin |
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![](https://webarchive.library.unt.edu/eot2008/20090514050042im_/http://www.cancer.gov/images/spacer.gif) |