Differential protein expression of P3 and P7 cells.

(A) 2-DE reference map of the human BM MSC obtained from Donor 1; (B) protein map showing the position of the 7 ACTB and of the 24 VIM isoforms showing a higher (underlined) or a lower content in P7 compared to P3; (C) functional categories with the highest number of proteins whose content is altered in P7 compared to P3. The number of protein isoforms is indicated.