Retinol-Binding ProteinsRetinol-Binding Proteins, PlasmaRetinol-Binding Proteins, CellularVitamin APrealbuminVitamin A DeficiencyAcetylglucosaminidaseRetinoidsTretinoinReceptors, Retinoic AcidNutritional StatusCarrier ProteinsLiverInsulin ResistanceRNA, MessengerBiological MarkersMolecular Sequence DataAmino Acid SequencePregnancyRetinol O-Fatty-AcyltransferasePoly(A)-Binding ProteinsBase SequenceBinding SitesSpectrometry, Fluorescence