Expression of the endocannabinoid system in the bi-potential HEL cell line: commitment to the megakaryoblastic lineage by 2-arachidonoylglycerol. - Catani, Maria Valeria; Fezza, Filomena; Baldassarri, Samantha; Gasperi, Valeria; Bertoni, Alessandra; Pasquariello, Nicoletta; Finazzi-Agrò, Alessandro; Sinigaglia, Fabiola; Avigliano, Luciana; Maccarrone, Mauro (Journal of Molecular Medicine, 2009)