the dna contents of bloodstream form trypanosomes ( life cycle stages circulating in the blood of the vertebrate host ) of four african trypanosoma species and of metacyclic forms ( the life cycle stage that is injected into the vertebrate by the tsetse fly during its bite ) of the same four species were measured by cytofluorometry of individual cells or nuclei .
C0007634
cells
C0007610
nuclei