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Dauer formation of PS312 and RS5134 at different pheromone concentrations. Response of PS312 and RS5134 to their dauer pheromones at different pheromone concentrations. All combinations of strain + pheromone (responder + producer) were tested for each pheromone concentration. Dauer formation was measured as the percentage of PS312 and RS5134 worms that entered the dauer stage in response to 50, 100 and 500 µl of the PS312 and RS5134 pheromones.
