Table 4. The average staining intensity of IgG subclasses in different stages of PMN (mean±s.d.).

IgG subclass	Stage I n = 56	Stage I-II n = 59	Stage II n = 44	Stage II-III n = 15	Stage III n = 5
IgG1	0.87±0.88	0.69±0.88	0.78±0.93	0.77±1.05	0.70±0.97
IgG2	0.52±0.68	0.54±0.71	0.30±0.59	0.57±0.78	1.00±0.93
IgG3	0.45±0.72	0.65±0.80	0.39±0.63	0.33±0.70	0.60±1.34
IgG4	2.27±0.59*	2.45±0.57*	2.49±0.73*	2.30±0.46*	1.20±1.30

*<0.001.