biotin containing tissues

From:"Sebree Linda A."

Does anyone out there have a good reference or list of tissues containing endogenous biotin?  We don't like to put avidin-biotin block on our staining procedures unless the tissue requires it.  We're aware of liver and kidney but there are other tissue types that also contain biotin to a lesser degree.  Thanks for your help.

Linda A. Sebree, HT(ASCP)
University of Wisconsin Hospital & Clinics
IHC/ISH Laboratory
600 Highland Ave.
Madison, WI 53792
FAX: (608)262-7174

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