peptide analysis ( cyanogen bromide cleavage after purification of extracted collagen chains ) demonstrated that heterologous tissue recombinations produced type ii collagen [ alpha ( ii ) ] ( 3 ) ( i.e. , cartilage-type ) in addition to type i collagen [ alpha ( i ) ] ( 2 ) alpha ( 2 ) .
C0009325
collagen
C0041455
type i collagen