| Reagent | Final Conc. | Volume | Mass |
| Proleukin (human recombinant IL-2) | 105 U/ml | 1 vial | |
| R 10 media | 20 ml |
resuspend IL-2 in 20 ml R 10, filter sterilize, store at 4°C
Proleukin: human recombinant Interleukin 2 from Chiron Therapeutics, Emeryville, CA 94608; 1-800-CHIRON8). It comes lyophilized, 22 x 106 U/vial - which is about 2 x 106 unit for the NK-cell cytotoxicity test (based upon a CTLL-2 [an IL-2 dependent cell line] titration).