. . . . . . . . . . . . . . . . "tscript(p(MGI:Spi1)) -> r(MGI:Ptprc)" . "Approximately 61,000 statements." . "Copyright (c) 2011-2012, Selventa. All rights reserved." . "BEL Framework Large Corpus Document" . . "20131211" . "Although CD45 is normally expressed in all leukocyte lineages, it is critically regulated by PU.1 only in myeloid cells. Whereas myeloid cells from PU.1 null mice failed to express CD45, lymphoid cells were CD45(+) by flow cytometry. Additionally, mRNA for CD45 was absent from PU.1-deficient myeloid cells." . . "Selventa" . . . . "2014-07-03T14:31:38.709+02:00"^^ . . .