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Spore germination of B. subtilis 168, cbQ (cwlJ), 168SB (sleB), and CJSB (cwlJ sleB). The germination of spores of the B. subtilis strains was monitored at A580 at the indicated times after the addition of l-alanine and is expressed as relative absorbance. The released dipicolinic acid and reducing groups in the supernatants of the spore suspensions were also measured. Squares, diamonds, circles, and triangles indicate B. subtilis 168, cbQ, 168SB, and CJSB, respectively.
