( ( regenerative ( feedback ( Positive feedback ) ) ) . )
(ROOT (S (VP (VB regenerative) (NP (JJ feedback) (JJ Positive) (NN feedback))) (. .)))
regenerative feedback Positive feedback.
(ROOT (S (NP (JJ Positive) (NN feedback)) (VP (VP (VBZ intensifies) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (NP (DT the) (NN body) (POS 's)) (JJ physiological) (NN condition))))) (CONJP (RB rather) (IN than)) (VP (VBG reversing) (NP (PRP it)))) (. .)))