Molecular and Functional Diversity of Visual Pigments: Clues from the Photosensitive Opsin-Like Proteins of the Animal Model Hydra. - Silvia Santillo; Pierangelo Orlando; Luciano Petrocellis; Luigia Cristino; Vittorio Guglielmotti; Carlo Musio (BVAI, 2005)

Diffuse Nerve Net of Hydra Revealed by NADPH-Diaphorase Histochemical Labeling. - Luigia Cristino; Vittorio Guglielmotti; Carlo Musio; Silvia Santillo (BVAI, 2007)