Fig. 3From: Transcriptome analysis of the effect of pyrroloquinoline quinone disodium (PQQ·Na2) on reproductive performance in sows during gestation and lactationEffects of dietary PQQ·Na2 supplementation during gestation and lactation on the concentration of nitric oxide and inducible NOS in plasma and placenta of sows. Con, control treatment; PQQ, PQQ·Na2 treatment; a NO, nitric oxide; b iNOS, inducible NOS. All values are expressed as means ± SEM (n = 8). a,b Mean values within a column with unlike superscript letters were significantly different (P < 0.05)Back to article page