has part has part has_part located in located_in produced_by produced by produced by hyaluronic acid synovial cell synovial fluid NCIT:C33718 FMA:12277 Portion of organism substance that is a clear fluid that occupies the space in synovial joints.[TAO] TAO:0005154 MESH:D013582 ZFA:0005154 uberon The fluid contains hyaluronan secreted by fibroblast-like cells in the synovial membrane, lubricin (proteoglycan 4; PRG4) secreted by the surface chondrocytes of the articular cartilage and interstitial fluid filtered from the blood plasma joint fluid galen:SynovialFluid GAID:265 UBERON:0001090 CALOHA:TS-0996 Wikipedia:Synovial_fluid Joint fluid is a transudate of plasma that is actively secreted by synovial cells. UMLS:C0039097 It provides nutrients and lubrication for articular cartilage MA:0002544 BTO:0001339 ENVO:02000039 synovial cavity of joint transudate secretion of serous gland