Fig. 4.
Distinct expression of synaptotagmin I and IV transcripts at P4 in cortex (A,D), hippocampus (B, E), and cerebellum (C, F). Bright-field photomicrographs of coronal sections display the distribution of synaptotagmin I (A–C) and synaptotagmin IV (D–F) transcripts. Exposure times were 6 weeks. A, D, Cortex; B,E, hippocampus; C, F, cerebellum. An arrowhead points to some highly labeled cells in F. CA1, CA1 cell layer;CA3, CA3 cell layer; DG, dentate gyrus;EGL, external germinal layer (arrowheadsin C and F); Fl, flocculus. Ventral side of the cerebellum is oriented toward theleft of photomicrographs C andF. Scale bars: A, D, 135 μm; B, C, E, F, 240 μm.