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Trajectory of competing parasites observed in replicate experiments. The plots show the natural log of the parasite ratio against time between competing parasites. The results shown are for the ART-R mutant (C580Y or R561H) compared to the isogenic ART-S clones (C580C or R561R) for each variant amino acid. The slope for the least-squares fit provides an estimate of the selection coefficient (s). Each color represents one replicate.
