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. 2017 Oct 27;8(60):102046–102066. doi: 10.18632/oncotarget.22143

Table 4. Standard curves, linear coefficients and linear ranges of GA in different bio-samples.

Bio-sample Standard curve Linear coefficient r2 Linear range (ng/mL)
Plasma of mice Y=0.006X+0.059 0.9991 4-6000
Heart Y=0.011X+0.182 0.9991 5-6000
Liver Y=0.007X+0.217 0.9994 4-6000
Spleen Y=0.005X+0.199 0.9991 4-6000
Lung Y=0.007X+0.112 0.9994 4-6000
Kidney Y=0.005X+0.158 0.9994 4-6000

Abbreviations: GA, glycyrrhetinic acid; Y, the peak area ratio of GA to IS; X, the concentration of GA.