The KMAC T cell hybridomas respond to
IEk/MCC, but not IEk/MCC99A. Shown is the
IL-2 produced by the three IEk+MCC specific KMAC T cell
hybridomas and the T cell hybridoma, KC99A, specific for
IEk+MCC99A in response to IEk-bearing CH12 B
lymphoma cells in the presence of no antigen (▪), 4
μg/ml of MCC peptide (░⃞), or 100 μg/ml MCC99A
peptide (□).