Figure 4From: Sialic acid transport and catabolism are cooperatively regulated by SiaR and CRP in nontypeable Haemophilus influenzaeExpression of nanE and siaP in 2019Δ cyaA ΔsiaR. Cultures grown with sialic acid (open bars), cAMP (gray bars), and both sialic acid and cAMP (black bars) were compared to a reference culture that received neither.Back to article page