- Endothelial catabolism of extracellular adenosine during hypoxia: the role of surface adenosine deaminase and CD26. Eltzschig, H.K., Faigle, M., Knapp, S., Karhausen, J., Ibla, J., Rosenberger, P., Odegard, K.C., Laussen, P.C., Thompson, L.F., Colgan, S.P. Blood (2006)