TABLE 1 

Variant doubling time and reversion rate

Colony typeDoubling time (95% CIc) (min)Reversion rate
WHT51.0. (44.5–61.5)
YA61.7 (49.0–83.3)0.15 ± 0.05a
YB65.0 (61.2–69.2)0.005 ± 0.06b
  • a YA reverted to WHT.

  • b YB reverted to YA.

  • c CI, confidence interval.