The PBMCs of two pigs with the Hp-16.0 haplotype (individuals #965 and #1938) were examined for classical class I SLA (A) and related mRNA (B) expression after stimulation. Closed squares with a solid line show TSST-1-stimulated PBMCs, open squares with a broken line show IFN-γ stimulation, and closed squares with a dotted line show the negative control.