Hydra expands approximately 30 times. The anatomical structure of the Hydra is shown in longitudinal section: endoderm, mesoderm, ectoderm, male and female egg cells, buds and mouth. The detailed block of the body wall in the stomach and intestine area, magnified about 200 times, clearly shows the microstructure of the transverse and longitudinal sections, especially various types of cells (stomatoblasts, myoepithelial cells, sensory cells, interstitial cells and nerves Network) structure. Intact. On the basis of explanatory notes.
