RT-PCR analyses of expression patterns of ORMDL1, ORMDL2, and ORMDL3. (a) Pattern of expression in a normalized panel of adult and fetal human tissues. (b) Northern blot hybridization using a ORMDL1 probe (containing the whole coding region) against the mRNA of human adult tissues. The size of the three detected transcripts is shown. The same pattern was obtained using a probe containing the ORMDL1 3'-UTR (data not shown).