Thirty‐one Burkitt's patients and forty‐eight matched controls from Uganda were HL–A typed to investigate possible antigen frequency differences which could suggest association of an HL–A antigen with disease susceptibility. Cells were shipped in tissue culture medium from Uganda to Oxford where they were HL–A typed using sera from the Fifth International Histocompatibility Workshop in the cytotoxic fluorochromatic assay. No significant frequency differences between patients and controls w