EXAMPLE 1 Method of Optimally Isolating Mandibular Condyle Chondrocytes, and of Culturing Primary Chondrocytes to Optimally Generate Optimally Differentiated Cultured Chondrocytes/Endochondral Bone Cells [0237] Background: Cartilage/bone diseases include numerous highly debilitating diseases, such as arthritis, which are of tremendous medical and economic impact and for which no optimal treatment