نبذة مختصرة : Panels A, B and C respectively show the GC 50 curves of C. fasciculata , T. brucei and L. major cultured in varying concentrations of biopterin (open circles) and folic acid (closed circles). Pterin-depleted cells were seeded at densities as specified in methods and cell growth was quantified after 72 h using a resazurin-based cell-viability assay. Results were analysed by 4-parameter non-linear regression using GraFit and presented as means ± S.E.M of triplicate measurements.
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