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Detection of the protein ab13882 (5ug/well) gave no signal with a His detection kit which has the ability to detect levels as low as 10ng. A positive control of tag marked protein gave good signal.
Asked on Oct 05 2006
I wanted to let you know that the outcome of my investigation with the source of ab13882 was that it was found that the lot you had received has not given satisfactory results in the recent tests. We have immediately removed all the stock of this product and are contacting all customers who purchased this lot to offer a replacement of the new lot. I hope this unfortunate event will not deter you from purchasing from Abcam in the future and wish you all the best with your research,
Answered on Oct 18 2006