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. 2015 Jul 29;8(3):435–454. doi: 10.3390/ph8030435

Figure 1.

Figure 1

Effect of storage at 2–8 °C on the protein and chelate content of the current good manufacturing practices (cGMP) TCMC-Trastuzumab over a 60 month period. Panel A: Protein concentration was determined by the Lowry method using a BSA standard. Values are the average of three determinations and the error bars represent the standard deviation. Panel B: The molar ratio of chelate to protein was determined using the spectrophotometric assay based on the transchelation between Pb(II) and arsenazo (III). Values are the average of two experiments and the error bars represent the standard deviation.