( ( In ( wild-type flies ) ) ( , ( ( the ( body surface ) ) ( ( is ( covered ( with ( ( cuticular structures ) ( that ( reflect ( ( the polarity ) ( of ( the ( underlying ( epithelial cells ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (JJ wild-type) (NNS flies))) (, ,) (NP (DT the) (NN body) (NN surface)) (VP (VBZ is) (VP (VBN covered) (PP (IN with) (NP (NP (NN cuticular) (NNS structures)) (SBAR (WHNP (WDT that)) (S (VP (VBP reflect) (NP (NP (DT the) (NN polarity)) (PP (IN of) (NP (DT the) (JJ underlying) (JJ epithelial) (NNS cells))))))))))) (. .)))
In wild-type flies, the body surface is covered with cuticular structures that reflect the polarity of the underlying epithelial cells .
(ROOT (S (NP (NNP Epithelial) (. ?) (NNP tissue)) (VP (VBZ consists) (PP (IN of) (NP (NP (NNS cells)) (SBAR (WHNP (WHNP (WDT that) (NN cover)) (NP (JJ inner) (CC and) (JJ outer) (NN body))) (S (VP (VBZ surfaces))))))) (. .)))