Betacellulin and activin A coordinately convert amylase- secreting pancreatic AR42J cells into insulin-secreting cells. - Mashima,H.; Ohnishi,H.; Wakabayashi,K.; Mine,T.; Miyagawa,J.; Hanafusa,T.; Seno,M.; Yamada,H.; Kojima,I. (J Clin Invest, 1996)