USP7 Antibody Host:Rabbit Antibody Type:Polyclonal Species Reactivity:Human, mouse, chicken Application:Western Blot Western blotting (1:500 – 1:2000). However, the optimal concentrations should be determined individually. The antibody recognizes USP7 of human origin. HeLa cell nuclear extract (Cat.# 1641-1) can be used as a positive control. Based on sequence homology, the antibody should also react with mouse and chick samples.