( ( Healthy cells ) ( ( are ( protected ( from ( ( the ( damaging effects ) ) ( of ( ( viruses , ) ( inhibiting tumors ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Healthy) (NNS cells)) (VP (VBP are) (VP (VBN protected) (PP (IN from) (NP (NP (DT the) (JJ damaging) (NNS effects)) (PP (IN of) (NP (NP (NNS viruses)) (, ,) (NP (VBG inhibiting) (NNS tumors)))))))) (. .)))
Healthy cells are protected from the damaging effects of viruses, inhibiting tumors.
(ROOT (S (NP (NNP Tamiflu)) (VP (VBZ inhibits) (NP (NP (NN spread)) (PP (IN of) (NP (NN virus))))) (. .)))