by subcellular fractionation of protoplasts from cultured p. bracteatum cells , the 1,000g sedimenting organelles have been identified as the major site of accumulation of the morphinan alkaloid , thebaine ( 99+/-0.8 % ) , and the benzophenanthridine alkaloid , sanguinarine ( 96+/-3 % ) .
C1720921
benzophenanthridine
C0002062
alkaloid