Fig. 2

The mammalian expression vectors pMH3-MHCSZ-123VH and pMH3-MHCSZ-123-VK. Both vectors contain GC-rich promoter and chicken beta actin gene intron-1 followed by dhfr cDNA. pMH3-MHC-SZ-123VH contains the variable sequence of the SZ-123 mouse monoclonal antibody heavy chain and constant region sequence of the human IgG1 heavy chain. pMH3-MHC-SZ-123-VK contains the variable sequence of the SZ-123 mouse monoclonal antibody light chain and constant region sequence of the human kappa chain