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. 2018 Aug 9;410(23):5751–5763. doi: 10.1007/s00216-018-1253-x

Fig. 1.

Fig. 1

Assessment of the bioassay performance. The Z′-factor for the bioassay was calculated to be 0.74. Positive control (C+) wells contain mobile phase A (n = 96); negative control (C−) wells contain 200 μM leupeptin (n = 96). The wells were evaporated to dryness prior to the bioassay