gene mapping studies have shown that c-myc , the cellular homologue of the viral myc oncogene , is localized at 8q24 ( ref 3-5 ) and that the three immunoglobulin gene loci map at the breakpoints involved in the translocation : immunoglobulin heavy-chain genes are located at 14q32 ( refs 6 , 7 ) , kappa light chains at 2p12 ( ref . 8 ) and delta light chains at , or close to , 22q11 ( ref 9 , 10 ) .
C0021027
immunoglobulin
C0021036
kappa light chains