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Fig. 9. The effect of pH on the load curve for WECB from B. canaliculatum.
The specimen was allowed to equilibrate in 0.2 mol l-1
citrate/phosphate buffer for 30 min prior to mechanical testing. The pH=2
treatment was the only treatment that appeared to cause a change in the
average yield stress and Hookean behavior of the specimen. Pictured are the
curves from the tenth cycle of loading.