( ( ( The ( limited nature ) ) ( of ( ( freezing injury ) ( at ( the ( cellular level ) ) ) ) ) ) ( ( ( is well ) ( illustrated ( by ( ( the ( great variety ) ) ( of ( tissues ( that ( can ( be ( ( recovered ( from ( ultra-low temperatures ) ) ) ( with ( present ( preservation technology ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ limited) (NN nature)) (PP (IN of) (NP (NP (JJ freezing) (NN injury)) (PP (IN at) (NP (DT the) (JJ cellular) (NN level)))))) (VP (VBZ is) (ADVP (RB well)) (VP (VBN illustrated) (PP (IN by) (NP (NP (DT the) (JJ great) (NN variety)) (PP (IN of) (NP (NP (NNS tissues)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB be) (VP (VBN recovered) (PP (IN from) (NP (JJ ultra-low) (NNS temperatures))) (PP (IN with) (NP (JJ present) (NN preservation) (NN technology)))))))))))))) (. .)))
The limited nature of freezing injury at the cellular level is well illustrated by the great variety of tissues that can be recovered from ultra-low temperatures with present preservation technology.
(ROOT (S (NP (NNS Ectotherms)) (VP (VBP undergo) (S (NP (NP (DT a) (NN variety)) (PP (IN of) (NP (NP (NNS changes)) (PP (IN at) (NP (DT the) (JJ cellular) (NN level)))))) (VP (TO to) (VP (VB acclimatize) (PP (TO to) (NP (NP (NNS shifts)) (PP (IN in) (NP (NN temperature))))))))) (. .)))