only normal type i collagen was incorporated into the extracellular matrix in vivo resulting in a tissue type i collagen content approximately 20 % of that of control ( bateman , j. f. , chan , d. , mascara , t. , rogers , j. g. , and cole , w. g. ( 1986 ) biochem . j . 240 , 699-708 ) .
C0015350
extracellular matrix
C0041455
type i