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  Indian J Med Microbiol
 

Figure 4: High performance liquid chromatograph chromatogram of pale catechu (isocratic elution: 80% water containing 0.1% formic acid and 20% acetonitrile containing 0.1% formic acid)

Figure 4: High performance liquid chromatograph chromatogram of pale catechu (isocratic elution: 80% water containing 0.1% formic acid and 20% acetonitrile containing 0.1% formic acid)