Do tick-borne diseases affect outdoor teaching in Slovenian preschools?

Childhood experiences with nature are decisive for children's wellbeing. The need for outdoor activities has been duly recognized in the preschool curriculum in Slovenia. However, there are some obstacles to this approach-specifically, tick-borne diseases.

The ultrastructure of photoreceptor cells in the pineal organ of the blind cave salamander, Proteus anguinus (Amphibia, Urodela).

We studied ultrastructure of the photoreceptor cells in the pineal organ of blind, depigmented, neotenic cave salamander, Proteus anguinus. Unlike in epigean vertebrates the outer segments of most photoreceptor cells consists of concentrically arranged lamellae, however; in few cells, the outer segments contain 7-9 plasma membrane disks. In both types of photoreceptor cells the outer segments enclose lumps of vesicles of different sizes.