- Receptor heteromerization in adenosine A2A receptor signaling: relevance for striatal function and Parkinson's disease. Fuxe, K., Agnati, L.F., Jacobsen, K., Hillion, J., Canals, M., Torvinen, M., Tinner-Staines, B., Staines, W., Rosin, D., Terasmaa, A., Popoli, P., Leo, G., Vergoni, V., Lluis, C., Ciruela, F., Franco, R., Ferré, S. Neurology (2003)