( ( Type ( II collagen ) ) ( ( ( ( is ( ( a ( major protein ) ) ( in ( articular cartilage ) ) ) ) and ) ( is ( ( a ( potential autoantigen ) ) ( in ( this disease ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Type) (NNP II) (NNP collagen)) (VP (VP (VBZ is) (NP (NP (DT a) (JJ major) (NN protein)) (PP (IN in) (NP (NN articular) (NN cartilage))))) (CC and) (VP (VBZ is) (NP (NP (DT a) (JJ potential) (NN autoantigen)) (PP (IN in) (NP (DT this) (NN disease)))))) (. .)))
Type II collagen is a major protein in articular cartilage and is a potential autoantigen in this disease.
(ROOT (S (NP (JJ Lamprey) (NN cartilage)) (VP (VBZ contains) (NP (DT no) (NN collagen))) (. .)))