11.   The older drugs attack the virus when it penetrates a healthy cell.

v. + cell >>共 512
kill 6.44%
use 4.05%
destroy 2.92%
have 2.92%
infect 2.31%
grow 2.31%
enter 2.13%
share 2.00%
damage 1.70%
attack 1.57%
penetrate 0.48%
penetrate + n. >>共 275
market 7.14%
skin 4.37%
wall 2.04%
airspace 1.75%
cell 1.60%
wood 1.60%
armor 1.46%
building 1.46%
city 1.31%
heart 1.31%
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