[Glucose-6-phosphatase activity of the pia mater of several representative vertebrates].

Studies have been made on the glucose-6-phosphatase activity in the pial matter of the lamprey Lampetra fluviatilis, carp Cyprinus carpio, frog Rana temporaria, tortoises Emys orbicularis and Testudo horsfieldi, hen, rabbit and cat. The data obtained not only confirmed earlier observations on extremely high activity of the enzyme in lamprey's brain, but also demonstrated high activity of glucose-6-phosphatase in the pial matter of other vertebrates, especially in tortoises.