passages.id: split_6_test_1459_passage
passages.type: progene_text
passages.text: Here , we present detailed data on the expression of the interleukin 7 receptor alpha chain ( IL-7Ralpha ) in leukaemic cells from 210 children with acute lymphoblastic leukaemia ( ALL ) and describe two novel alternatively spliced transcripts of human IL-7Ralpha coding for truncated receptor proteins which are still capable of binding IL-7 .