Fig. 4From: Molecular and cellular characteristics of human and non-human primate multipotent stromal cells from the amnion and bone marrow during long term cultureEvaluation of MHC class I expression by flow cytometry a and β2m by quantitative PCR b in MSCs. Amnion-derived cells from both species seem to regain immunogenicity triggered by MHC class I over time, whereas bone marrow MSCs already show full expression of MHC class I at passage 3. Interestingly, in marmoset expression of β2m is significantly lower than in human. *Significance by Student’s t test. β2m β2-microglobulin, MHC major histocompatibility complexBack to article page