Synovial joint, light micrograph. The joint space between articular bones of a synovial joint shows the meniscus composed of fibrocartilage. The bone ends show a surface of articular hyaline cartilage stained blue, deep to which is a wide region of developing bone (green) and bone marrow tissues (red). Paraffin section, trichrome stain. Magnification: x2 when width printed at 10cm.