I am confused why there are horizontal error bars on this graph for A and B. 2 1

Question

I am confused why there are horizontal error bars on this graph for A and B.

2 150 S 150 15 10 ns E 8 o 100 O 100 10 O 50 50 E 5 2- CO N CO N Time post meal (min) Time post meal (min) E E E E Fig. 1. Plasma uridine dynamics during fasting and refeeding. (A Plasma uridine levels in male C57BL/6 mice in a fasting/refeeding study (n 7). (B) Plasma uridine levels in male Sprague-Dawley rats in a fasting/refeeding study (n 7). (C and D) Plasma uridine and uric acid levels in healthy women after subjects were fasted for -12 hours overnight, and at regular intervals after they consumed a breakfast meal at 7 a.m. (47). Plasma uridine and uric acid levels after overnight fasting were con- sidered as basal for each subject for statistical analysis (n 6). Data were analyzed with paired t test. P 0.001, P 0.0001; ns, not significant. Error bars denote SEM

Explanation / Answer

Horizontal lines do a pairwise comparisons after one-way/wo-way ANOVA

If two bars have horizonal lines above them and stars are also indicaed that means signifcan difference

If no sars then no significant differences

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