Fig. 2From: Human targeted phenobarbital presents a poor substrate of gut microbiome deciphering new drug targets beyond pharmacokinetic curbsA Phenobarbital calibration curve (0.5–16 µg/mL) studied. B Chromatogram of phenobarbital standard solutions (12 µg/mL). C Chromatogram of an untreated sample. D Chromatogram of the phenobarbital-treated sample at 3 h. E Chromatogram of the phenobarbital-treated sample at 4 h. F Chromatogram of the phenobarbital-treated sample at 5 h post-phenobarbital oral treatment (15 mg/kg of BW) sampling timeBack to article page