Anti-His tag, AlpSdAbs® VHH is designed for detecting His tag fusion proteins specifically. Anti-His tag, AlpSdAbs® VHH is based on monoclonal, recombinant, single domain antibody derived from the variable regions of heavy chain of Alpaca pacous, and Anti-His tag, AlpSdAbs® VHH detects the His tag selectively, no reactivity with other proteins., High lot-to-lot consistencyIncreased sensitivity and higher affinityAnimal-free production . . . .