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. 2021 Apr 23;21:126. doi: 10.1186/s12866-021-02189-z

Fig. 4.

Fig. 4

Heatmap for Spearman’s rank-sum correlation coefficient between genera and some immune-factors (immunocytes and cytokines). The tree on the left shows the clustering of genera, while the one on the top shows the clustering of immune-factors. The red color on the heatmap indicates a positive correlation, while blue indicates a negative correlation. The darker the color, the larger the correlation coefficient. *: p-value ≤0.05, **: p-value ≤0.01