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Fig. 8. A model for navigation of trochlear motor axons by neuropilin 2. (A) Normal
embryo. (B) neuropilin 2-transfected embryo. Expression domains of
Sema3F (dark blue), neuropilin 2 (green) and the trochlear
nerve trajectory (magenta) are indicated. Distribution of neuropilin 2 ligands
is denoted (light blue). See Discussion for explanation. III, oculomotor
nucleus; IV, trochlear nucleus; MHB, midbrain-hindbrain boundary.