T lymphocytes are critical in mediating herpes simplex stromal keratit
is (HSK). Using immunohistologic methods, we studied the T cell subset
s and the T cell receptor variable region (TCR V beta) repertoire of T
cells in the eye after corneal infection with HSV (KOS strain). We in
vestigated the possibility that there might be differential V beta pre
ferential usage in HSK resistant and susceptible BALB/c congenic mice
that differ only in a small region associated with the Igh-1 gene locu
s. The inflamed corneas of HSK susceptible C.AL-20 mice were mainly in
filtrated by CD4+ cells and by V beta 8 expressing cells. Such T cells
were not seen in the corneas of resistant C.B-17 mice. Our results in
dicate that CD4+V beta 8+ cells are involved in mediating HSV-1 stroma
l keratitis.