Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Immuno-reactivity of glial fibrillary acidic protein (green) in primary astrocytes treated with amitriptyline. Lysosomes are stained with an acid-dependent lysotracker dye (red). Courtesy of Ms. Vanessa Ganal, Drs. Jürgen Zschocke and Theo Rein, MPI of Psychiatry, Germany.