Fig. 1

Schematics presentation of VHH library construction. cDNAs of A conventional antibody, B heavy chain antibody and their RT-PCR products of a and b. The VHH gene (b1) was obtained by another round of PCR
Schematics presentation of VHH library construction. cDNAs of A conventional antibody, B heavy chain antibody and their RT-PCR products of a and b. The VHH gene (b1) was obtained by another round of PCR