There were no significant differences in the percentage of CD4+IFN-γ+ T cells among all groups prior to surgery (14.0 ± 8.5% in gastric resection, 13.6 ± 6.6% in colorectal resection, 16.3 ± 8.3% in hepatic resection and 14.6 ± 15.6% in LC). The gene discussed is CD4; the disease is laryngotracheoesophageal cleft.