title ; Three new asterosaponins from the starfish Culcita novaeguineae and their bioactivity authors ; Tang HF, Yi YH, Li L, Sun P, Zhang SQ, Zhao YP. Planta Med. 2005 May;71(5):458-63. http://www.ncbi.nlm.nih.gov/pubmed/15931586 tolong ya gan bantuin... makasih sebelumnya.
