passages.id: split_6_test_120_passage
passages.type: progene_text
passages.text: Reverse transcription - polymerase chain reaction analysis showed that interleukin 2 receptor , interleukin 3 receptor , interleukin 6 receptor , interleukin 12 receptor ( IL-12R ) and signal transducer and activator of transcription ( STAT ) 3 , STAT 4 mRNA was expressed in all CD1a + cell populations throughout and appears to be constitutive .