. . "encysted protozoa from a suspension containing the encysted protozoa by either a salt flotation process where the salt is salts such as sodium sulfate, magnesium sulfate, magnesium chloride, calcium chloride, or mixtures thereof, or a gas flotation processUS7250286May 20, 2003Jul 31, 2007Schering-Plough CorporationMethods for the in vitro culture of Sporozoea sp. and uses thereofUS7816118May 29, 2" . . . .