Figure 1From: A novel Bruton’s tyrosine kinase gene (BTK) missense mutation in a Chinese family with X-linked agammaglobulinemia Identification of the BTK gene mutation. (A) The segment of exon 13 of BTK in the normal family members. (B) Mutation in the segment of exon 13 in the BTK in the hemizygous mutation proband. (C) The segment of exon13 of BTK in the heterozygous family members. (D) Heredity map of the family with the proband (III-1).Back to article page