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Twelve genes, including 11 peptidase genes are present in tandem on chromosome 3. (A) The protease motifs were identified and color coded based on the conservation level. (B) RT-PCR for each gene was normalized to C. parvum 18S rRNA and the median for four biological replicates for the 7 time point time course is shown. (C) The normalized expression was then averaged by each gene's total expression for all 7 time points.
