( ( ( Cryogenic grinding ) ( of ( plant ( and ( animal tissue ) ) ) ) ) ( ( is ( ( a technique ) ( used ( by microbiologists ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Cryogenic) (NNP grinding)) (PP (IN of) (NP (NN plant) (CC and) (NN animal) (NN tissue)))) (VP (VBZ is) (NP (NP (DT a) (NN technique)) (VP (VBN used) (PP (IN by) (NP (NNS microbiologists)))))) (. .)))
Cryogenic grinding of plant and animal tissue is a technique used by microbiologists.
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