CELL SUSPENSION CULTURE OF LITHOSPERMUM ERYTHRORHIZON IN A 10-LITRE AIRLIFT LOOP BIOREACTOR Study on Antioxidant Activity of Lithospermum erythrorhizon in vitro Advances in studies on medicinal Radix Arnebiae Seu Lithospermi Relationship between cell developmental stage and shik onin formation in cell culture of Lithospermum erythrorhizon