When citing the eHistology Atlas, please use the following text: eHistology Atlas with Kaufman annotations (http://www.emouseatlas.org/emap/eHistology/) and refer to this publication: Elizabeth Graham, Julie Moss, Nick Burton, Yogmatee Roochun, Chris Armit, Lorna Richardson and Richard Baldock (2015) The atlas of mouse development eHistology resource, Development 142:1909-1911. doi: 10.1242/dev.124917 When acknowledging the use of images, please also refer to the plate and the image (e.g. Plate 19a, Image e)."