Dear friends, I have come to read an article on cancer and came to know that there is a tree called Sour sop (relative of our Sitaphal). The leaves and bark when boiled in water and drunk acts like chemotherapy and it does not destroy any healthy cells. The tree grows in South India . Fruit is similar to Custard apple with some thorns on the outer fruit. Please have a look at this link.
http://en.wikipedia.org/wiki/Soursop http://jamaica-gleaner.com/gleaner/20110820/business/business6.html http://thebest-healthy-foods.com/soursop/ http://okrahealthbenefitsrecipes.com/soursop-health-benefits-soursop-for-cancer/ Regards, Mani Nair