Results (histogram on next slide)
EtA should have the least amount of GST activity because it was not exposed to Cd and was acclimating to the environment.
Et0 should a slightly elevated GST activity level because it has been exposed once to Cd, but it has the second highest GST activity level.
Et1 has more GST activity than ECt1 because it was exposed to Cd, while ECt1 was the control.
Since it has been exposed three times to Cd, Et2 should have the highest GST activity, but instead ECt2 has the greatest activity.