Extended Data Fig. 2: Histogram of number of significant nodes detected after permuting host labels.
From: Widespread extinctions of co-diversified primate gut bacterial symbionts from humans

X axis indicates number of significant nodes (Mantel test p < 0.01, r > 0.75) recovered in the co-diversification scan after permuting labels of host tree but retaining symbiont tree labels and all other structure in the dataset. Results of 100 random permutations are shown. Value for unpermuted dataset is shown as a vertical red line.