Fig. 4From: Extreme MHC class I diversity in the sedge warbler (Acrocephalus schoenobaenus); selection patterns and allelic divergence suggest that different genes have different functionsFrequency distributions of MHC class I exon 3 alleles in our study population of sedge warblers, presented separately for a) alleles with no deletion (blue), b 6 bp deletion alleles (green) and c) 3 bp deletion alleles (orange)Back to article page