Plasmodium falciparum parasites from long-term in vitro culture have been labeled with the DNA-binding dye Hoechst 33258. After labeling, parasitized cells have been successfully analyzed and sorted, using a fluorescence-activated cell sorter, into populations of uninfected, singly infected, and multiply infected cells.
To whom correspondence should be sent.
Present address: Malaria Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20205.