- Measurement of basal, substrate induced and total P-glycoprotein activity in bronchoalveolar lavage T-cell subsets. Donnenberg, V.S., Wilson, J.W., Burckart, G.J., Zeevi, A., Iacono, A., Donnenberg, A.D. Cytometry. Part A : the journal of the International Society for Analytical Cytology. (2004)