Figure 6.

A, B, Somatic (A) and axon terminal (B) recordings from Cx36-deficient retinas. Light stimuli are the same as in Figure 2. Both somatic and axon terminal light responses closely resembled responses from wild-type and rhodopsin-deficient retinas, reflecting a strong cone component in both the soma and axon terminal. A, B, Calibration: 5 mV, 250 ms. C, Normalized intensity–response profiles for C57BL/6 wild-type horizontal cell somata (n = 17) and axon terminals (n = 7), and Cx36-deficient somata (n = 7) and axon terminals (n = 3). Error bars indicate mean ± SE. The intensity that elicited half-maximal responses did not differ significantly between wild-type and Cx36-deficient horizontal cell somata or between wild-type and Cx36-deficient horizontal cell axon terminals.