( ( If ( neuraminidase ( is inhibited ) ) ) ( , ( ( the virus ) ( ( ( is not ) ( able ( to ( effectively ( ( ( replicate and ) spread ) ( to ( other cells ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (NN neuraminidase)) (VP (VBZ is) (ADJP (JJ inhibited))))) (, ,) (NP (DT the) (NN virus)) (VP (VBZ is) (RB not) (ADJP (JJ able) (S (VP (TO to) (VP (ADVP (RB effectively)) (VB replicate) (CC and) (VB spread) (PP (TO to) (NP (JJ other) (NNS cells)))))))) (. .)))
If neuraminidase is inhibited, the virus is not able to effectively replicate and spread to other cells.
(ROOT (S (NP (NNP Tamiflu)) (VP (VBZ inhibits) (NP (NP (NN spread)) (PP (IN of) (NP (NN virus))))) (. .)))