Imprinting status of metatherian homologs of eutherian imprinted genes

Unless otherwise indicated, imprinting has been detected or inferred in multiple tissues/organs and developmental stages. P, imprinted, paternal allele expressed; M, imprinted, maternal allele expressed; P = M, not imprinted, biallelic expression; NH, no homolog detected. Dashes indicate no data available.
aData from http://www.geneimprint.com/ and http://www.otago.ac.nz/IGC, and references therein.