Does anyone else use avidin biotin with the Biogenex QD200-OX kit.? Biogenex tells me it is not necessary to use this block, but others tell me avidin biotin must be used on all tissues regardless of biotin activity.? Biogenex says the power block is universal and does not require avidin biotin block unless there is biotin proven background staining.? I am so confused.? Please help.
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