. . . . . . . . . . . . . . . "a(CHEBI:progesterone) -> sec(p(HGNC:SERPINE1))" . "Approximately 61,000 statements." . "Copyright (c) 2011-2012, Selventa. All rights reserved." . "BEL Framework Large Corpus Document" . . "20131211" . "Endometrial cells are known to release a major PA inhibitor, PAI-1. Progesterone stimulated the release of PAI-1." . . "Selventa" . . . . "2014-07-03T14:33:45.752+02:00"^^ . . .