Table 2.

Serum IL-2 in different groups (pg/ml, x̅ ±s)

Group (n=8)	4d	7d
Control	269.08±48.71	274.91±53.2
PN group	151.22±21.57a,b	136.10±19.4a,b,d
PN+Gln group	184.21±23.4 a,c*	224.13±23.08 a*,b*,c,d
EN group	195.96±47.39a,c*	221.43±53.55 a*,b*,c,d
EN+Gln group	222.09±26.0a,c	263.11±32.50c,d

^a P<0.01 vs control group;

^a* P<0.05;

^b P<0.01vs EN+Gln group;

^b* P<0.05;

^c P<0.01 vs PN group

^c* P<0.05;

^d P<0.01 vs 4 d.