comparisons of the hla antigen frequencies in normal controls and in different subsets of patients with malignant choroidal melanoma , partitioned on the basis of histological tumour cell types and inclusion of the splits of all the hla-a and -b locus antigens , revealed significant heterogenity only in hla-b ( p = 0.043 ) in the 'pure spindle ' cell type choroidal melanomas .
C0019721
hla antigen
C0019737
hla-b