. . "Reactome DB_ID: 2173192"^^ . . . . . "COL18A1"^^ . "4-Hyp Glu-Gal-Hyl-collagen alpha-1(XVIII) chain"^^ . "4-hydroxyprolyl-collagen alpha-1(XVIII) chain"^^ . "COIA1_HUMAN"^^ . . . . . .