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Truncated GST-PspA fusion complements pspA mutant CE1343 for growth on MacConkey plates. Cells of wild-type (wt) strain CE1224 and strain CE1343 (pspA), carrying either vector plasmid pRP269 or pGST-PspAΔC, were streaked on L-broth (A) and MacConkey (B) plates containing ampicillin. The plates were incubated at 30°C for 24 h, and the results were photographed.
