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Effects of prenatal exposure to opioids on social behaviors.
Notes: The total social interaction time was recorded in male (A) and female (B) offsprings. All data are expressed as mean ± standard error of the mean (n=8). *P<0.05, ***P<0.001 compared with control group; ###P<0.001 compared with morphine or buprenorphine groups; $$P<0.01 compared with males with the same treatment.
