Rana esculenta. After Christian Groß, Head of Biology Department (retired). Enlarged approx. 4 times, in SOMSO-Plast®. The dorsal side of the model is mounted on a green board and shows an anatomical preparation open at the ventral side of a male frog. Liver and stomach-intestine-tract are removable to show the position of the internal organs in stages. The abdominal side of the urinary and genital organs of a female water frog are shown on a supplementary model for comparison. Separates into 3 parts. Mounted on a green board.