Temporal and spatial localization of prothymosin alpha transcript in the Harderian gland of the frog, Rana esculenta.

The Harderian gland (hg) is the only orbital gland of the frog Rana esculenta, and it has the essential function of lubricating the eyes. The hg secretory activity is seasonal, showing the highest value in summer. There is, at present, no data on gene expression of the frog hg.