The Importance of GLWamide Neuropeptides in Cnidarian Development and Physiology
Figure 1
Types of hydra. (a) Normal Hydra. (b) Head of Hydra. Nerve cells are visualized by indirect immunofluorescence using an anti-RFamide antibody. (c) Epithelial Hydra. Scale bars represent 2 mm (a and c) and 100 μm (b), respectively.