Xenbase Image ID: 133873

Fig. 2. Electron micrographs of the pronephros of a stage 42 tadpole and Xenopus explants treated with activin A and retinoic acid. Three types of tubular structure are observed in the explants (A–C). (A) Cuboidal cells with scant microvilli on their luminal surface (arrow) resemble the pronephric duct cells of normal larvae (D). (B) Tubular cells with abundant microvilli on their luminal surface (arrow) resemble the pronephric tubule cells of normal larvae (E). (C) Cells with cilia consisting of microfilaments (arrow) correspond to the cells of normal larvae located in the intermediate segment connecting the proximal and distal tubules or in the neck segment between the pronephric glomus and proximal tubule (F). Image published in: Osafune K et al. (2002) Copyright © 2002. Image reproduced with permission of the Publisher, John Wiley & Sons. Larger Image Printer Friendly View

Return to previous page