MHC class III genes encode -
class 3 or complement components C2& C3 of the classical pathway, as well as properdin factor B of the alternate pathway, heat shock proteina & tumor necrosis factor alpha& beta Reff: Ananthanarayanan & Panikers textbook of microbiology 9th edition pg:140
Complement component C3
Tumor necrosis factor
Interleukin 2
Beta 2 microglobulin
Immunology