Re: IHC control slides/blocks

antigencity is variable on antibody , i have found we cut 20-30 slides of the most common everyday antibody controls, put in slide box and store at 4 degrees centigrade and have very little loss of antigenicity, however on nuclear stain antibodies such as Ki67, er, pr cerb-2,p53,we cut smaller volumes of slides and refrigerate. in the past i would cut slides for er,pr etc... and freeze at -20 to get them to last about 6 months.                Dana

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