It is possible to use molecular genetic techniques to characterize the T cells found in psoriasis plaques and compare them to the T cells found in healthy skin. In healthy skin, T cells have a wide diversity of T cell receptors. In other words, there are many different T cell clones found in healthy tissue. In psoriasis plaques, there are fewer T cell clones, but often there are a large number of T cells representing only a small number of clones (this is called oligoclonal expansion). There are usually many more T cells in total found in psoriasis plaques relative to healthy skin. Think about the implications of this finding. What conclusion is NOT supported by these findings?

a. specific T cells react with many different antigens in psoriasis
b. specific T cells react with skin antigens in psoriasis
c. specific T cells have expanded in psoriasis lesions incorrect
d. specific T cells have homed to psoriasis lesions