( ( suggest ( that ( ( ( ( ( type ( IX collagen ) ) , ) ( ( ( ( a collagen ) active ) specifically ) ( in ( ( the construction ) ( of cartilage ) ) ) ) ) , ) ( plays ( ( a ( key role ) ) ( in pseudoachondroplasia ) ) ) ) ) ) . )
(ROOT (S (VP (VB suggest) (SBAR (IN that) (S (NP (NP (NN type) (NN IX) (NN collagen)) (, ,) (NP (NP (DT a) (NN collagen)) (ADJP (JJ active)) (ADVP (RB specifically)) (PP (IN in) (NP (NP (DT the) (NN construction)) (PP (IN of) (NP (NN cartilage)))))) (, ,)) (VP (VBZ plays) (NP (NP (DT a) (JJ key) (NN role)) (PP (IN in) (NP (NN pseudoachondroplasia)))))))) (. .)))
suggest that type IX collagen, a collagen active specifically in the construction of cartilage, plays a key role in pseudoachondroplasia.
(ROOT (S (NP (JJ Lamprey) (NN cartilage)) (VP (VBZ contains) (NP (DT no) (NN collagen))) (. .)))