Strain specific ANG2 expression analysis in homozygous B-hANG2 mice by ELISA.Plasma was collected from wild-type mice (+/+) and homozygous B-hANG2 mice (H/H), and analyzed by ELISA. Mouse ANG2 was detectable in wild-type mice. Human ANG2 was only detectable in homozygous B-hANG2 mice. ND: not detectable.