. . . . . . . . . . . . . . . "p(HGNC:PTN) => kin(p(HGNC:ALK))" . "Approximately 61,000 statements." . "Copyright (c) 2011-2012, Selventa. All rights reserved." . "BEL Framework Large Corpus Document" . . "1.4" . "We recently demonstrated that the growth factors pleiotrophin (PTN) and midkine (MK) are ligands for ALK and that upon ALK activation" . . "Selventa" . . . . "2014-07-03T14:30:45.402+02:00"^^ . . .