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Effects of selenium on growth. (A) Growth of M. maripaludis wild-type Mm900 (solid circles), FSD10 (open circles), FSD103 (selD spcS double-deletion) containing the E. coli selD expression vector (open triangles), Mm900 pstK deletion mutant, pre-transformed with the E. coli selA expression vector (solid triangles), FHM1 (hrsM deletion; solid squares), and FHM11 (hrsM pstK double-deletion; open squares) cultivated on H2 + CO2. (B) Cultivation on formate. Same symbols as in A.
