More spontaneous whole-slice contractions in cryoinjured LMSs from the ENDO. (A) Examples of pro-arrhythmic pacing and spontaneous contractions in control and cryoinjured LMSs from ENDO. (B) Mean values of the frequency of spontaneous contractions in LMS from the ENDO (n_control = 12 from 11 rats; n_cryoinjury = 12 from 10 rats; comparison with Mann-Whitney test) and from the EPI (n_control = 13 from 12 rats; n_cryoinjury = 9 from 9 rats; comparison with Mann-Whitney test).