Thank you all for the response of anti-human secondary antibody request.
But I got another problem I need your help. I am trying to do human Ab on 
human tissue IHC. So I also need normal human serum to block the secondary 
Ab before the complex is applied to sample. Could you tell me what's the 
appropriate and safe way to get normal human serum except getting it from 
our own body that I am scared to do?
Thank you and the histonet is always the place I can rely on.
Carol

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