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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Respir Physiol Neurobiol. 2013 Apr 13;187(3):234–243. doi: 10.1016/j.resp.2013.04.004

Fig 7. Effect of 10-wk nicotine or ethanol exposure on tadpole gill burst duration.

Fig 7

Mean gill burst duration during last 3 min of normoxia,10, 60, 90, 120, 150, and 180 min of hypoxia, and 30 min of normoxic recovery in control and nicotine- or ethanol-exposed early (A) and late (B) metamorphic tadpoles. 10-wk nicotine or ethanol exposure had no effect on lung burst duration. Hypoxia had no effect on gill burst duration of any early or late metamorphic tadpole treatment group. Data presented are mean ± SE for 6 –7 tadpoles (P > 0.05).