Fig. 3
From: Treatment of severe COVID-19 with human umbilical cord mesenchymal stem cells
Chest computed tomography (CT) images of the patients in the hUC-MSC and control groups. CT imaging results for 6 patients (P3, P5, and P11 indicate patients 3, 5, and 11 from the hu-MSC group; P16, P23, and P37 indicate patients 16, 23, and 37 from the control group) at 3 time points (pretreatment, 1 week after treatment, and 2 weeks after treatment). The red arrows show the sites of inflammatory exudation, consolidation, or absorption. The red triangles show the sites of Crazy-paving pattern; the yellow triangles show the sites of consolidation; the blue triangles show the sites of GGO; the black triangles show the sites interlobular septal thickening; the purple triangles show the sites of bronchial wall thickening