( Exocytosis ( ( is ( ( a ( ( mechanism or ) process ) ) ( that ( allows ( substances ( to ( leave ( the cell ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Exocytosis)) (VP (VBZ is) (NP (NP (DT a) (NN mechanism) (CC or) (NN process)) (SBAR (WHNP (WDT that)) (S (VP (VBZ allows) (S (NP (NNS substances)) (VP (TO to) (VP (VB leave) (NP (DT the) (NN cell)))))))))) (. .)))
Exocytosis is a mechanism or process that allows substances to leave the cell.
(ROOT (S (NP (DT The) (NN cell)) (VP (VBZ expels) (NP (NN waste) (CC and) (JJ other) (NNS particles)) (PP (IN through) (NP (NP (DT a) (NN process)) (VP (VBN called) (NP (NNS exocytosis)))))) (. .)))