|  | 
            
                | 
                                
                                        | 
                                                Embryonic brain 80427
                                         |  
                                        | 
                                                Transmission electron microscope image of a thin section cut through the developing brain tissue (telencephalic hemisphere) of an 11.5 day mouse embryo. This image shows an example of the early vascularization of the cerebral cortex: a capillary that has perforated the surface of the telencephalon.  JEOL 100CX TEM
 Image courtesy of Louisa Howard, Miguel Marin-Padilla.
 
 |  |