Fig. 1From: Three functional mutation sites affect the immune response of pigs through altering the expression pattern and IgV domain of the CD4 proteinThe identification of the mutation sites and transcripts of the CD4 gene in pigs. a The SNPs and two haplotypes of the CD4 gene. b The structure of different transcripts of the CD4 gene in pigs. c Detection of the abundance of different transcripts of porcine CD4 using RT-PCR. d Statistical analysis of the abundance of different transcripts between two haplotypes based on the number of different clones (haplotype A, n = 296; haplotype B, n = 218). *, P < 0.05; **, P < 0.01Back to article page