Marc Perkins - OCC Biology Department: Hydra tentacles with nematocysts
Marc Perkins - OCC Biology Department: Nematocysts in cnidocytes at 1,000x
Marc Perkins - OCC Biology Department: Nematocyst in cnidocytes at 1,000x, 1
Marc Perkins - OCC Biology Department: Nematocyst in cnidocytes at 1,000x, 2
Marc Perkins - OCC Biology Department: Hydra tentacle with nematocysts 1
Marc Perkins - OCC Biology Department: Nematocysts at 1,000x