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. 1999 Oct;67(10):5192–5199. doi: 10.1128/iai.67.10.5192-5199.1999

FIG. 4.

FIG. 4

Exoprotease production by A. hydrophila AH-1N and AH-1NahyI-6 as a function of cell density. (A) A. hydrophila AH-1N (solid line) and A. hydrophila AH-1NahyI-6 (broken line) in the presence (■) or absence (□) of 1 μM C4-HSL in the culture medium; (B) inhibition of exoprotease activity by A. hydrophila in the presence (■) or absence (□) of 10 μM 3-oxo-C12-HSL in the culture medium. The data are representative of three experiments.