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High EphR<br />
(low to high Eph ligand)<br />
Low EphR<br />
Why do the axons from the nasal retina go to the<br />
posterior tectum, rather than being stopped in the<br />
anterior tectum?<br />
a. The nasal axons are more sensitive to the Eph ligands<br />
b. The nasal axons are less sensitive to the ligands<br />
c. The nasal axons are unresponsive to the Eph ligand<br />
d. None of the above