( ( Dectection ( of ( ( the genes ) ( encoding ( botulinum neurotoxin ) ) ) ) ) ( ( ( types ( A ( to E ) ) ) ( by ( the ( polymerase ( chain reaction ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Dectection)) (PP (IN of) (NP (NP (DT the) (NNS genes)) (VP (VBG encoding) (NP (NN botulinum) (NN neurotoxin)))))) (VP (VBZ types) (NP (NP (NNP A)) (PP (TO to) (NP (NNP E)))) (PP (IN by) (NP (DT the) (NN polymerase) (NN chain) (NN reaction)))) (. .)))
Dectection of the genes encoding botulinum neurotoxin types A to E by the polymerase chain reaction.
(ROOT (S (NP (DT The) (NN polymerase) (NN chain) (NN reaction)) (VP (VBZ is) (NP (NP (DT a) (NN way)) (PP (IN of) (S (VP (VBG making) (NP (NP (NNS copies)) (PP (IN of) (NP (DT a) (NN gene))))))))) (. .)))