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Fig. 2. Receptor-mediated responses in oocytes expressing zebrafish cDNA library or
OR-I7. (A) Current changed in response to IBMX, an activator of CFTR, but did
not change in response to octanal, an agonist of the OR-I7 chemoreceptor, in
cells heterologously expressing CFTR alone. (B) Both forskolin, an activator
of CFTR, and octanal caused increased CFTR activity when applied to oocytes
expressing OR-I7 and CFTR. (C) Both isoproterenol (Iso), an agonist of
β2AR, and octanal caused increased CFTR activity when applied
to oocytes expressing the library and CFTR but caused no change in oocytes
expressing CFTR alone (data not shown). (D) Oocytes expressing only the
library had a very slight change in current in response to formoside. Note the
difference in time scale from A to D.