Neurite Outgrowth Activity of Cyathane Diterpenes from Sarcodon cyrneus, Cyrneines A and B - Marcotullio, Maria Carla; Pagiott, Rita; Maltese, Federica; Obara, Yutaro; Hoshino, Tomohiro; Nakahata, Norimichi; Curini, Massimo (Planta Medica, 2006)