In vitro regeneration and cardenolide determination of an endemic foxglove, Digitalis cariensis (Aegean Foxglove) - Mohammed, A; Yücesan, B; Demir-Ordu, Ö; Cihangir, C; Eker, I; Kreis, W; Gürel, E (In Vitro Cell Dev Biol Plant, 2015)