Figure 4From: The quantal theory of how the immune system discriminates between "self and non-self"IL2R density determined at the single cell level by flow cytometry. IL2R+ T cells were labeled with anti-Tac (CD25) monoclonal antibody and analyzed by single cell flow cytometry. The IL2R density varies among cells within he population over 3 orders of magnitude. From reference 26.Back to article page