steroid biosynthetic process, bile acid biosynthetic process, steroid catabolic process, cholesterol catabolic process,digestion, steroid metabolic process, cholesterol metabolic process, bile acid metabolic process, lipid biosynthetic process, lipid catabolic process, organic acid biosynthetic process, organic acid catabolic process, sterol metabolic process, sterol catabolic process, bile acid catabolic process, carboxylic acid biosynthetic process, carboxylic acid catabolic process, oxidation reduction,
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