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Spiders under long-wave UV light: (a) exposed to sterile PBS (control); (b) 4 h after exposure to CNK02; and (c) 48 h after exposure to CNK02. (d) An unexposed spider that has interacted with an exposed spider for 24 h. Areas of green fluorescence, suggesting the presence of viable CNK02 cells, are pointed out with arrows. (Online version in colour.)
