( ( ( treating cells ) ( with ( ( lysozyme and ) sonicating ) ) ) ; )
(ROOT (S (VP (VBG treating) (NP (NNS cells)) (PP (IN with) (NP (NN lysozyme) (CC and) (NN sonicating)))) (: ;)))
treating cells with lysozyme and sonicating;
(ROOT (S (NP (DT A) (NN lysozyme)) (VP (VBZ destroys) (NP (NNS bacteria)) (PP (IN by) (S (VP (VBG digesting) (NP (PRP$ their) (NN cell) (NNS walls)))))) (. .)))