<prompt> MHC class III genes encode:Complement component C3Tumor necrosis factorInterleukin 2Beta 2 microglobulin  <response>: HLA class III contains genes for Complement components C2 and C4Q of classical pathway Not C3Q Properdin factor BQ of alternate pathway Tumor necrosis factorQ: Alpha and Beta Heat shock protein 70 Q Enzyme tyrosine hydroxylase Genes for MHC also known as HLA are located on sho arm of chromosome 6. 