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Effect of temperature on the distribution of RI, RIA, and RIB protease isoforms in the supernatant of P. gingivalis W50 at different growth temperatures. $, P < 0.01 for results at 41°C versus results at 37 and 39°C; #, P < 0.05 for results at 41°C versus results at 37 and 39°C.
