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The simulated TER-values at BED = 45 Gy for different combinations of number of treatment fractions and time between fractions. The maximum TER value is indicated with a blue arrow. Fractionation schemes protracting beyond the end of the 1-MT delivery are shown as white bars. 1-MT, 1-methyl tryptophan; BED, biologically effective dose; TER, therapeutic enhancement ratio.
