图1。COVID-19中嗜中性粒细胞和嗜酸性粒细胞及嗜碱性粒细胞明显减少。(A)研究的实验和分析流程,样本来自中重度COVID-19患者和年龄匹配的健康对照组。(B)点图(左)和冲积图(右)描述了纳入研究队列的患者的人口统计学和临床特征。个体患者的数值见SI附录,图S1A。严重组别(中度,蓝色;严重,紫色;死者,灰色)表示。氧量表:1、无供氧;2、氧气< 10 L/min; 3, low flow of oxygen (noninvasive) 10 L/min to 15 L/min; 4, high flow of oxygen (noninvasive); and 5, oxygen supply via ventilator (invasive) or extracorporeal membrane oxygenation. (C) Gating strategy for the identification of granulocyte subsets and their UMAP projection is shown on Left. On Right, analog results are obtained through unsupervised subset identification based on UMAP projection of total granulocytes. (D and E) Absolute cell counts (D) and frequencies (E), based on Trucount flow cytometry analysis, among total leukocytes for neutrophils, eosinophils, and basophils in healthy controls (n = 17), moderate COVID-19 patients (n = 10), and severe COVID-19 patients (n = 16). (F) Ratios of granulocyte absolute counts over lymphocyte absolute counts in healthy controls (n = 17), moderate COVID-19 patients (n = 10), and severe COVID-19 patients (n = 16). D–F use Kruskall−Wallis test and two-stage Benjamini, Krieger, and Yekutieli test. Bars represent median. *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001. BMI, body mass index; WBC, white blood cells; CRP, C-reactive protein; SOFA, sequential organ failure assessment; SSC, side scatter; FSC, forward scatter; neu, neutrophils; eos, eosinophils; bas, basophils; lymphs, lymphocytes. Credit: DOI: 10.1073/pnas.2109123118