<prompt> MHC III codes forTNF alphaIL 1HLA AHLAB  <response>: Ans. a TNF alphaRef: Robbins 9thpg 195; 8thpg 191MHC III: No direct role in immune system QCodes for:complement components C2, C4, properdin, factor B QTNF, HSP-70, Tyrosine hydroxylase 