to define the contribution of the normal swr strain to the development of nephritis , we analyzed the association of the i-a beta-chain gene of ia-encoding region , the t-cell-receptor beta ( tcr beta ) -chain gene , and immunoglobulin heavy-chain allotype ( igh ) with the development of lupus nephritis in 165 nzb x swr crosses .
C0021034
immunoglobulin heavy-chain
C0017351
igh