MethodsNOD-SCID mice were transplanted with fetal pig pancreatic fragment (FPP) before adoptive transfer with exogenous macrophages isolated from rejecting FPP xenografts of BALB/c recipient mice.

• 再从移植了胎猪的胰腺碎片（FPP）并发生排斥反应的受体Balb/c鼠身上分离出巨噬细胞，将这些外源性巨噬细胞植入NOD/SCID鼠。