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  Indian J Med Microbiol
 

Figure 2: Mass spectra of phellodenrine and magnoflorine in positive mode. (a) Product ion spectrum of biomarker phellodenrine in positive ion mode; (b) product ion spectrum of biomarker magnoflorine; (c) the proposed mass spectrometry fragmentation mechanism of phellodenrine; and (d) the proposed mass spectrometry fragmentation mechanism of magnoflorine

Figure 2: Mass spectra of phellodenrine and magnoflorine in positive mode. (a) Product ion spectrum of biomarker phellodenrine in positive ion mode; (b) product ion spectrum of biomarker magnoflorine; (c) the proposed mass spectrometry fragmentation mechanism of phellodenrine; and (d) the proposed mass spectrometry fragmentation mechanism of magnoflorine