A, the morphologies of 35-day fetuses, B and C, the corresponding methylation statuses of H19/Igf2 in 35-day fetuses. IV, the in vivo produced fetuses, IVF, the IVF fetuses, NT-CON-N, the normal cloned fetuses in the NT-CON group, NT-CON-A, the abnormal cloned fetuses in the NT-CON group, NT-TSA-N, the normal cloned fetuses in the NT-TSA group, and NT-TSA-A, the abnormal cloned fetuses in the NT-TSA group. TSA prevented the H19/Igf2 imprinting disruption and morphological abnormality of cloned fetuses. Black or white circles indicate methylated or unmethylated CpG sites. The data were expressed as mean ± SEM. a-cValues with different superscripts differ significantly (P<0.05).