( ( Most ( unique ( tumor antigens ) ) ) ( ( arise ( due ( to ( ( point mutations ) ( in ( DNA ( induced ( by ( ( ( ( ( ( chemical carcinogens ) , ) ( ultraviolet light ) ) , ) or ) X-irradiation ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (RBS Most) (JJ unique) (NN tumor) (NNS antigens)) (VP (VBP arise) (ADJP (JJ due) (S (VP (TO to) (VP (VB point) (NP (NNS mutations)) (PP (IN in) (NP (NP (NNP DNA)) (VP (VBN induced) (PP (IN by) (NP (NP (NN chemical) (NNS carcinogens)) (, ,) (NP (JJ ultraviolet) (NN light)) (, ,) (CC or) (NP (NNP X-irradiation)))))))))))) (. .)))
Most unique tumor antigens arise due to point mutations in DNA induced by chemical carcinogens, ultraviolet light, or X-irradiation.
(ROOT (S (NP (NNP Induced) (CC or) (NNP spontaneous)) (VP (VBP are) (NP (NP (DT the) (CD two) (NNS methods)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NNS mutations)) (VP (VBP arise) (PP (IN in) (NP (NN dna)))))))) (. .)))