256 Beraún Beraún Y Y Nieto Nieto A A Collado Collado MD MD González González A A Martín Martín J J Polymorphisms at Tumor Necrosis Factor (TNF) Loci are Not Associated with Chagas’ Disease Polymorphisms at Tumor Necrosis Factor (TNF) Loci are Not Associated with Chagas’ Disease Tissue Antigens Tissue Antigens 1998 1998 52 52 1 1 81 81 83 83 10.1111/j.1399-0039.1998.tb03028.x 10.1111/j.1399-0039.1998.tb03028.x 9714479 9714479. This evidence concerns the gene TNF and Chagas disease.