Examples of bullfrog

• A big bullfrog croaked down on the shore. 

• A little farther on they heard some bullfrogs, in a swamp. 

• Again the owls hooted along the stream and bullfrogs croaked from the reedy places. 

• But now we'll go fishing for bullfrogs. 

• There was a flop in the water, and the bullfrog disappeared from sight. 

• Thus, we think that the possibility of an opsin difference between the porphyropsin and the rhodopsin of the bullfrog can be neglected.

• Bullfrog retinal bipolar cells may express heterogeneous glycine receptors at dendrites and axon terminals.

• Glycinergic synaptic transmission to bullfrog retinal bipolar cells is input-specific.