Fig. 2.

Pyrimidine and metabolite concentrations in urine of βUP deficient patients and controls. Patients are classified in terms of their genotype. (a) N-carbamyl-β-alanine, (b) N-carbamyl-β-aminoisobutyric acid, (c) dihydrouracil, (d) dihydrothymine, (e) uracil, and (f) thymine. In controls, the top, bottom and line through the middle of a box, correspond to the 75th, 25th and 50th percentiles, respectively. Whiskers on the bottom extend from the 2.5th percentile, and on the top, the 97.5th percentile