Fig. 3From: Changes in serum levels of apelin and nitric oxide in hospitalized patients with COVID-19: association with hypertension, diabetes, obesity, and severity of diseasePearson correlation test indicated correlations between serum apelin level with length of hospital stay A and arterial O2 saturation B in COV patients and the level of serum nitrite C and age D in studied groups. O2Sat: arterial O2 saturationBack to article page