Fig. 4
From: Gut microbiota imbalance in colorectal cancer patients, the risk factor of COVID-19 mortality
A PLS-DA score plot of the control and cancer patients of positive ions was shown based on LC–MS technology. B The permutation plot of positive ions (200 times, R2 = 0.83, Q2 =  − 0.51) was conducted and shown. C PLS-DA score plot of the control and cancer patients of negative ions was shown based on LC–MS technology. D The permutation plot of positive ions (200 times, R2 = 0.83, Q2 =  − 0.51) was conducted and shown. E The heat map exhibited the differently expressed substances detected in colorectal cancer patients. F The thermodynamic chart showed the expressions of several substances are correlated. Red blocks represent positive correlation, blue blocks represent the negative correlation. And the deeper the color, the stronger the correlation. Non-significant correlations were marked with crosses inside of the boxes