Effect of human platelet supernatant on proliferation and matrix synthesis of human articular chondrocytes in monolayer (2D) and three-dimensional alginate cultures

^*BG Trauma Centre, Eberhard-Karls University, Tuebingen, Germany

^† Natural and Medical Science Institute, Reutlingen, Germany

^‡Department of Orthopaedics, Eberhard-Karls University, Tuebingen, Germany

^§Institute of Biomaterials, Tampere University of Technology, Tampere, Finland, and ¶Department of Surgery, Oulu University Hospital, Oulu, Finland