FIG. 1.

Quantitative PCR analysis of genetically mixed strain infections of P. c. chabaudi in nonimmune mice. (a) Percentages of parasitemia recorded on a log scale over the period that blood samples were collected for DNA extraction and quantitative PCR analyses. (b, c, and d) Proportions of different strains of P. c. chabaudi measured by RTQ-PCR in two nonimmune mice infected with approximately equal proportions of parasites of each strain (see Materials and Methods) in combinations of (b) AJ and CB, (c) AS and CB, and (d) AJ and AQ. Numbers in columns represent the mean value obtained for the minority strain. Error bars represent the standard deviations between the two mice in each group (AS and CB, AJ and CB, and AJ and AQ).