Animal studies and cryosectioning C57BL/6J adult mice (8 weeks old or 12 weeks old in pregnancy-related studies) were used in this study. Mice were group-housed in the École Polytechnique Fédérale de Lausanne (EPFL) animal facility on 12-h light/dark cycles, at ambient temperature and humidity, with ad libitum access to food and water; pregnant female mice were maintained group-housed
