. . . . . . . . . . . . "a(SCHEM:Tretinoin) -> r(HGNC:KRT19)" . "Approximately 61,000 statements." . "Copyright (c) 2011-2012, Selventa. All rights reserved." . "BEL Framework Large Corpus Document" . . "20131211" . "Retinoic acid (RA) is known to modulate stratified squamous epithelial differentiation, including expression of the basal cell keratin K19 and the suprabasal keratins K1/K10 and K4/K13 Exposure to 10(-6) M RA increases the levels of RAR beta and K19 mRNA; conversely," . . "Selventa" . . . . "2014-07-03T14:33:08.217+02:00"^^ . . .