Extraction, isolation, and purification of polysaccharides from leaves of Acanthopanax gracilistylus and property of their moisture retention Separation and ldentification of the Anti-inflammatory Diterpene from the Root Cortices of Acanthopanax gracilistylus W.W.Smith Accumulation dynamic of acankoreagenin in leaves of Acanthopanax gracilistylus Smashing tissue extraction technology optimization for polysaccharides from stems of Acanthopanax gracilistylus and their in vitro immunological activities