Fig. 4From: Food-specific sublingual immunotherapy is well tolerated and safe in healthy dogs: a blind, randomized, placebo-controlled studySterility testing. Above: The content of all tubes was clear and no turbidity was seen after 14Â days of incubation. Below: Magnifications of the tubes inoculated with content of dispenser 1 showing no turbidity after incubation for 14Â days as described in material and methods (from left to right: Tryptone Soya Broth and peanut (*), Tryptone Soya Broth and placebo and only Tryptone Soya Broth (white arrow); Nutrient broth and peanut (*), Nutrient broth and placebo, only Nutrient broth (black arrow))Back to article page