Fig. 14

Ultrastructure of the developing WT and AS corpus callosum. Representative electron micrographs of the corpus callosum body in (A1) a WT mouse and (B1) a AS littermate at P16. Representative electron micrographs showing examples of myelinated axons observed in (A2, A3, A4) a WT mouse and (B2, B3, B4) an AS littermate at P16. Representative electron micrographs of the corpus callosum body in (C1) a WT mouse and (D1) a AS littermate at P30. Representative electron micrographs showing examples of myelinated axons observed in (C2, C3, C4) a WT mouse and (D2, D3, D4) a AS littermate at P30. (E) and (F) Representative electron micrographs showing layers of compacted myelin around the axons shown in C4 and D4. Scale bars: (A1, B1, C1, D1) = 500 nm; (A2-4), (B2-4), (C2-4), (D2,4) = 125 nm, (E), (F) = 50 nm