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. 2021 Aug 13;13(8):1252. doi: 10.3390/pharmaceutics13081252

Figure 2.

Figure 2

The level of folate receptor (FR) expression in tumor cells measured by Western blot analysis. (A) An example of Western blot analysis of the FR level in tumor cell lysates. (B) The relative level of FR expression in mouse (lymphosarcoma RLS and LS, melanoma B16, Lewis lung carcinoma LLC, hepatocellular carcinoma G29, and leukemia L1210 cell lines) and human (carcinoma KB-3-1 and its multidrug-resistant analog KB-8-5) tumor cells. The level of β-actin was used as an internal standard. The data represent the mean ± standard error of the mean from three independent experiments.