© Matt VALLEY / PercMem / CNRS Images
Slice of adult mouse olfactory bulb, in which so-called newborn neurons are observed. They have just been born, yet in an adult brain. These neurons appear on the image in white due to a lentiviral vector coding for GFP (Green Fluorescent Protein). The image was obtained by confocal microscopy, on a slice of brain, following an immunohistochemical reaction (a method of locating proteins in cells).