Mico1 (maternal intergenic circadian oscillating 1) and Mico1os (maternal intergenic circadian
oscillating 1, overlapping sequence) are overlapping transcripts that resides in the DMR located in
the intergenic region of Dlk1-Gtl2 and most likely represents non-coding RNA. Both transcripts
showed exclusive maternal expression in brain, pituitary, spleen, kidney and uterus
S et al, 2008).