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Design of the experimental study. Experimental design: Male rats were exposed to biomass smoke (4 hours/day, 5 days/week, for 4 weeks). Exposed or control males were mated with unexposed female rats, to generate the offspring: immediately after exposure and after 60 days (long-term period). Behavior and cognitive abilities of offspring born by mating immediately after exposure (F1 (1)) and offspring born by mating in the long-term period after exposure (F1 (2)) were assessed.
