Xenbase Image ID: 137937

Fig. 6. RA alters regionalization in the hindbrain. Sections of stage 45 tadpoles through the hindbrain of control (left) and 0.5/iM RA-treated embryos (right, +RA) stained with anti-neurofilament antibody. White arrows mark the three exit points of the Vth, Vllth/VIIIth and IXth cranial nerves from top to bottom respectively in control embryos. Only two discrete exit points are observed in RA-treated embryos (right). From these sections it is not possible to determine if one of the nerves is missing or is superimposed upon another. However, the distance from the most posterior exit point and the first spinal nerve is identical in the two embryos. Note the more anterior position of the otic vesicle (OV) spanning the isthmus (i, open arrow) between the midbrain (mb) and hindbrain (hb). Image published in: Papalopulu N et al. (1991) Copyright © 1991. Image reproduced with permission of the publisher and the copyright holder. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. Larger Image Printer Friendly View

Return to previous page