( ( Type ( XI collagen ) ) ( ( is ( essential ( for ( ( the ( organization ( and ( structural integrity ) ) ) ) ( of ( the ( cartilage ( extracellular matrix ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Type) (NNP XI) (NNP collagen)) (VP (VBZ is) (ADJP (JJ essential) (PP (IN for) (NP (NP (DT the) (NN organization) (CC and) (JJ structural) (NN integrity)) (PP (IN of) (NP (DT the) (NN cartilage) (NN extracellular) (NN matrix))))))) (. .)))
Type XI collagen is essential for the organization and structural integrity of the cartilage extracellular matrix.
(ROOT (S (NP (JJ Lamprey) (NN cartilage)) (VP (VBZ contains) (NP (DT no) (NN collagen))) (. .)))