| Popis: |
1. Aluminum, injected as A1Cl 3 in the snail Helix pomatia L., affected the activities of both acid and alkaline phosphatase in homogenates prepared from the mantle. 2. In snails with intact as well as damaged shells the activity of acid phosphatase was increased by Al, while that of alkaline phosphatase was decreased. 3. In the shell-damaged snails the activity of the acid phosphatase was approximately 15% lower and the activity of the alkaline phosphatase roughly 20% higher than that of the intact snails receiving the same Al-dose. 4. As the changes in enzyme activity associated with shell-repair are unaffected by Al, it is concluded that reduced weights of the shell-repair membranes and effects on the phosphatases, although both a result of the Al-injections, are independent of each other. |
