Figure 2: Genotype frequencies of HLA-B Bw4 and Bw6 epitopes in the study groups. Frequency of Bw4/Bw4 homozygous, Bw4/Bw6 heterozygous and Bw6/Bw6 homozygous is reported as percentage for LTNP (black bars) and FP (open bars). Statistical analysis between groups has been performed with chi-square and chi-square per trend test as appropriate. *p<0.05; ns=not significant.
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