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Frequencies (x‐axis) of swine leukocyte antigen (SLA) class I (SLA‐1, SLA‐3 and SLA‐2) and class II (DRB1, DQB1 and DQA) allele groups (y‐axis) identified in the studied European farmed pigs. ‘Blank’ indicates alleles that cannot be detected with the primer sets utilised in the current study. n.d., Not determined.
