Ethidium bromide stained 6% polyacrylamid gel of representative TCR-β PCR products.

(S) DNA size marker. (1) Normal tonsillar tissue. (2) Lesional skin, CTCL (case 18). (3) Infiltrated lymph node, CTCL (case 18). (4) Peripheral T-cell lymphoma (case 29). (5) T-ALL (case 41). (6) Anaplastic large-cell lymphoma (case 58). (7) Intestinal T-cell lymphoma (case 53). (8) Cell line Hut102. (9) B-cell lymphoma. PCR products in lanes 1, 2, 8, and 9 were generated from DNA of frozen material, and those in lanes 3, 4, 5, 6, and 7, from DNA extracted from paraffin-embedded specimens.