- Toxicology of Kalopanax pictus extract and hematological effect of the isolated anti-rheumatoidal kalopanaxsaponin A on the Freunds complete adjuvant reagent-treated rat. Choi, J., Huh, K., Kim, S.H., Lee, K.T., Kwon, S.H., Park, H.J. Arch. Pharm. Res. (2001)