No difference (ratio 1): p<0.05 with events as n 62.5%; per-mouse median, ignoring day 0.5%; per-mouse median, day as a block 5.0%
KO 20% lower (ratio 0.8): p<0.05 with events as n 99.5%; per-mouse median, ignoring day 21.9%; per-mouse median, day as a block 78.5%