Hi all,
isotype control seems usually omitted in WB, intentionally unused in Flowcyto, but necessary in IP...
I think paper concerning Flowcyto have clearly states the reason discarding isotype control--- impossible to make sure isotype-control-generated and antibody-generated FcR background staining match with each other, besides inability to account for spillover
But I believe expertise is still needed to illuminate the difference in the role of isotype control in IP, WB and Flowcytometry, and any comments are welcome.
J