Fig. 3
From: OffsampleAI: artificial intelligence approach to recognize off-sample mass spectrometry images
Parameters of the recognized DHB clusters. a: The formula n*M+p*(M-H2O)-x*H+y*K+z*Na represents the combinatorial model for matrix clusters from (Keller and Li, 2000) with M representing the DHB matrix molecular formula (C7H6O4). b-c: Histograms of parameters of the formula from A among ions in 31 MALDI-imaging DHB positive mode datasets which were annotated by METASPACE with an FDR<=50% and ion image recognized as off-sample