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Immunohistochemistry of MHC class I and class II. A) ATLL cells expressing MHC class I. B) Loss of MHC class I. C) β2M is expressed on ATLL cells. D) Loss of β2M, E) ATLL cells, positive for MHC class II, F) Loss of MHC class II.
MHC, major histocompatibility complex; ATLL, adult T-cell leukemia/lymphoma; β2M, beta 2 microglobulin
