Fig. 3From: Construction of a camelid VHH yeast two-hybrid library and the selection of VHH against haemagglutinin-neuraminidase protein of the Newcastle disease virusSDS-PAGE of purified VHH. All seven purified VHH were separated on 12 % SDS-PAGE gels. And the gel was stained with coomassie blue. Lane 1 to 7 represent VHH 1 to VHH 7, respectively. The molecular weight of the 6 × His-SUMO-VHH fusion proteins were about 33 kDa in sizeBack to article page