Anodonta cygnea, anatomical view, right half of shell - pallium half and gill removed, foot opened at the right side. After Christian Groß, Head of Biology Department (retired). Linearly enlarged 4 times, in SOMSO-Plast®. The model shows the special features of the external and internal structure of a mussel. The organ systems, which are seen only with difficulty on a natural preparation, have been accentuated and schematized for educational purposes in both structure and colour. Separates into 5 parts. On a green base.