Tspan32 (Phemx, Tssc6) is paternally repressed in day 9.5 placentas but not in embryos (Umlauf
D et al, 2004).
A previous report found biallelic expression in day 12.5, 16.5 embryos and placentas, and in newborn
M et al, 2000) while Nicholson
RH et al (2000) found biallelic expression in day 13.5 embryos, and in adult spleen and thymus.
Okae H et al (2012) showed, by
embryo transfers, that apparent imprinting is attributable to maternal decidual expression, but they
imprinting and maternal expression of this gene in trophoblast stem cells (TS).