Fig. 4From: Cigarette smoke challenges bone marrow mesenchymal stem cell capacities in guinea pigBox plots of infiltrated labelled cells in different lung structures. Cells were counted in total lung, alveolar septa and blood vessels after intratracheal (a) or vascular (b) administration of BM-MSC obtained from healthy or CS exposed animals, P values were obtained using the Mann–Whitney U-testBack to article page