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You are given 5mL of 3mg/mL protein solution. You are asked to prepare samples for SDS-PAGE...

You are given 5mL of 3mg/mL protein solution. You are asked to prepare samples for SDS-PAGE containing 250ng, 500ng, 750ng, and 1000ng. Your pipettes are calibrated to 2uL at the lower limit. Your total volume is 20uL, with 5uL being your loading buffer. How would you prepare these samples?

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