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Influence of PABA and tyrosine on folate production of L. lactis grown in CDM. Extracellular folate (white bars), intracellular folate (hatched bars), and total folate production (black bars) are shown. Strains were grown under the following conditions: without PABA and without tyrosine (bars 1), with 100 μM PABA and 1.2 mM tyrosine (bars 2), with 100 μM PABA but without tyrosine (bars 3), and with 1.2 mM tyrosine but without PABA (bars 4).
