mRNA tissue distribution of Slc10a1, and Bsep in skate and mouse. skBsep, mNtcp, and mBsep appeared to be liver-specific genes, whereas skSlc10a1 was abundantly expressed in the brain and testes with low levels in the liver. β-Actin (ActB) served as a control. Expression below 1,000 copies of mRNA per microgram of total RNA was considered background. All values are expressed as means from triplicate measurements.