According to the severity of asthma and COPD, the severe NA group (44.98 ± 7.14%) had higher amounts of MSR1+ cells than the C (34.36 ± 9.30%, p = 0.0408) and moderate–mild NA groups (32.27 ± 6.42%, p= 0.0125). The gene discussed is MSR1; the disease is chronic obstructive pulmonary disease.