to study the interactions of lipoproteins , connective tissue components and cells , mouse peritoneal macrophages were incubated in the presence of human low density lipoproteins ( ldl ) that had been complexed with pig aortic proteoglycans ( pg ) or incubated in the presence of soluble collagen and/or lysyl oxidase , which catalyses the formation of cross-linkages in collagen and elastin by oxidising epsilon-amino groups of lysine residues to aldehydes .
C0086418
human
C0013765
elastin