(S (S (S (NP (BASENP (DT The) (NN body) (POS 's)) (BASENP (NN immune) (NN system))) (VP (VBZ is) (ADJP (ADJP (ADJP (RBR less) (JJ effective)) (PP (IN at) (S (VP (VBG quashing) (BASENP (NN disease)))))) (SBAR (IN than) (S (BASENP (PRP it)) (VP (MD could) (VB be))))))) (CONJP (COLON -) (CC but)) (S (S (SBAR (IN if) (S (BASENP (PRP it)) (VP (VBD were) (ADJP (JJR better))))) (S (BASENP (DT the) (NN immune) (NN system)) (VP (MD might) (VP (VB do) (NP (BASENP (JJR more) (NN harm)) (PP (IN than) (BASENP (NN good)))))))) (COMMA ,) (PP (VBG according) (PP (TO to) (NP (BASENP (JJ new) (NN research)) (PP (IN by) (NP (BASENP (NNP Michael) (NNP Deem)) (CC and) (NP (BASENP (NNS colleagues)) (PP (IN of) (NP (BASENP (NNP Rice) (NNP University)) (PP (IN in) (BASENP (NNP Houston))))))))))))) (PERIOD .))