Maps of the human Fas and FasL genes with polymorphism positions indicated.

<p>(A) Map of the human Fas gene. Exons 1–9 are numbered and represented by black boxes. (B) position of the single nucleotid variations within the core promoter of the Fas gene, a G>A polymorphism at position −1377 and a A>G polymorphism at position 670. (C) Map of the human Fas Ligand gene. Exons 1–4 are numbered and represented by black boxes. (D) Position of single nucleotide polymorphisms (SNPs) within the Fas Ligand promoter, a C>T substitution at position −844 and a A