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BP grade is the UK equivalent of USP Water for Injection and reflects suitability for use in controlled research environments where reagent quality directly affects experimental reproducibility

And if you overdose on copper, you can actually get toxicity from it

MM patients who progressed after daratumumab treatment had elevated levels of the complement inhibitors CD55 and CD59, in agreement with the hypothesis that CDC represents a major mechanism of action for daratumumab and suggesting a mechanism of resistance to CDC-mediating antibodies

This creates clear, consistent records that any medical professional can understand