Biochemistry General 81ffcdab Aggrecan in A Receptor over platelets B A molecule present in osteoid tissue C Granules in leukocytes D Important component of cartilage High-Yield Explanation Aggrecan is the major proteoglycan component of cartilage. It is composed of several glycosaminoglycans (hyaluronic acid, chondroitin sulfate and keratin sulfate) and both link and core proteins.