negative control
with no added | virus
| negative control | |
| med. pharma. | controlo negativo |
| virus | |
| environ. | vírus |
| IT | vírus informático; programa-vírus |
| |||
| controlo negativo | |||
|
negative control : 3 phrases in 3 subjects |
| Chemistry | 1 |
| Health care | 1 |
| Pharmacy and pharmacology | 1 |