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. 2022 Mar 8;13:740513. doi: 10.3389/fimmu.2022.740513

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Copyright © 2022 Zhang, Xia, Lv, Li, Jin, Chen, Han, Shi, Jiang and Jin

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Landscape of immune cell infiltration in chronic obstructive pulmonary disease. (A) Boxplot of the proportion of 22 types of immune cell infiltrates. Red in the boxes represents the chronic obstructive pulmonary disease group and blue represents the normal group. *P < 0.05; **P < 0.01; ns, not significant. (B) Heatmap plot of correlations among 22 types of immune cells. Blue and red indicate positive and negative correlation, respectively. The darker the color the stronger the correlation.