Dear Flowers, I have used the Polyclonal surface light chain, FITC-conjugated (anti-kappa, anti-lambda) for a few years. Recently, I have found that the light chain had strong expression even in CLL cases and those of negative light chain. Perhaps it maybe a stong non-specific binding of the clones. If so, how can I improve it? If not, can you suggest any idea? Thanks. Cheers. WK Lee Dept of pathology, UCH, Hong Kong
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