Micro-organisms(bacteria) http://en.wikipedia.org/wiki/Amoeba_(genus)
An amoeba is a one-celled organism that can split itself into two of the same. Itdoesn't have a gender.
Bruceantin, a potent quassinoid purified from an Ethiopian plant Brucea antidysentrica was found to amoebicidal and killed Entamoeba histolytica in vitro with an LC 50 Of 0.018 mg/ ml. Another...
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