[Analysis of water-soluble antigens of chick iris]

Three serum and twelve tissue antigens were revealed in adult chick iris by immunodiffusion and immunoelectrophoresis. Among the tissue antigens five were characteristic of the eye tissues alone: a specific iris antigen, an antigen revealed in the iris and the retina, and three antigens characteristic of the lens (the alpha-, beta- and delta-crystallines). The rest seven antigens were interorganic differing by their distribution in the tissues and organs investigated; among them one was specific of muscle tissue.