Fig. 4

Homozygosity and relationship to blood stage infection for successfully amplified oocyst loci, stratified by human infection. Results are based on revised criteria involving detection of matched peaks in related blood or oocyst samples and are from all eight markers pooled. The three cases on the right were initially judged to be monoclonal in blood, but the presence of novel alleles in oocysts and use of the revised criteria for assessing minor alleles indicated that case 104728 was the only infection that was clonal at the blood stage (as well as in its oocysts)