[Heart valve fibroblast Fc receptor study and the search for similar receptors in other tissues]

The data are confirmed about the presence of Fc-receptors reacting with human and rabbit IgG on the fibroblasts of human and bovine heart valves. It is shown the similar receptors are present on the fibroblasts of joints and L-cells. The receptors react largely with monomeric IgG. Clear-cut distinctions are revealed between the fibroblasts of heart valves and those of the myocardium which like other cells of myocardial interstitial connective tissue do not contain Fc-receptors.