Fig. 2
From: Insights into how development and life-history dynamics shape the evolution of venom
Development of the venom system in the model sea anemone Nematostella vectensis. a The life cycle and timeline of N. vectensis, with a conservative estimate of the occurrence and diversity of venom-secreting cells. The shifting roles of venom across the development of N. vectensis, from being toxic (purple) to having additional defensive (dark green) and predatory (cyan) functions. Schematic representing the minimum number of types of gland cells (red) and nematocytes (green). b–d Immunostaining Nv1 localized in ectodermal gland cells of N. vectensis polyp [69]. e–g Nematocytes from transgenic polyp expressing mOrange2 under control of NEP3 promoter and embedded in the cuticle of Artemia salina. Only one nematocyte in the picture is mOrange2 positive [70]. UE unfertilized eggs, G gastrula, P planula, M metamorphosis, PP primary polyp, AP Adult polyp