Eric Walker added a number of topics to Physiology, and added Physiology to Biology

Eric Walker added a number of topics and a number of links to Dentistry, dentists and teeth, and added Dentistry, dentists and teeth to Medicine, drugs and healthcare and Skeletal system

Eric Walker added Dentistry, dentists and teeth and Osteoarthritis to Skeletal system, and added Skeletal system to Physiology

Eric Walker added Osteoarthritis - Wikipedia and Cartilage Is Grown in the Arthritic Joints of Mice - The New York Times to Osteoarthritis, and added Osteoarthritis to Arthritis and Skeletal system