Polyacrylamide gels of TCRγ (set 1) PCR products. Lanes M, ◊XHinfl molecular-weight markers (the 82-bp fragment is indicated); lanes 1, positive control T-cell lymphoma; lanes 2, negative control without template DNA. (A) Lanes 3, 4, and 5, 6, and 7, 8: duplicate amplifications of three cases of uncomplicated celiac disease. (B) Lanes 3, 4 and 5, 6: duplicate amplifications of two cases of nonresponsive celiac disease. (C) Lane 3, EATL tumor mass; lanes 4 through 7, nonlymphomatous mucosa.