G PHYSICS
G01 MEASURING; TESTING
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2333/00 Assays involving biological materials from specific organisms or of a specific nature
G01N2333/435 from animals; from humans
G01N2333/46 from vertebrates
G01N2333/47 Assays involving proteins of known structure or function as defined in the subgroups
G01N2333/4722 Proteoglycans, e.g. aggreccan