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Fig. 7. Effects of bath application of the selective GABAB agonist
baclofen (0.5 µmol l–1) on lung burst frequency response
to application of the
1-adrenoceptor agonist phenylephrine
(Phe; 25 µmol l–1) in (A) the pre-metamorphic
(N=5) and (B) adult groups (N=4). To facilitate comparisons,
control data from both stage groups (grey symbols, broken lines; N=6
in each group) were transposed from Fig.
4. Trigeminal neurograms (
V, trigeminal nerve) presented
below show representative respiratory-related activity recorded under each
condition. Values are means ± s.e.m. *Values statistically
different from baseline at P<0.05.