Roderick G. BonfiglioliDaryl R. WebbRobert H. Symons2014-05-212014-05-211996The Plant Journal(1996) 9(4) pp457-465http://hdl.handle.net/123456789/1535Confocal laser scanning microscopy and transmission electron microscopy (TEM) were used in conjunction with in situ hybridization techniques to compare and contrast the subnuclear (ultrastructural) and tissue (histological) localizations, respectively, of citrus exocortis viroid (CEV) and coconut cadang cadang viroid (CCCV). Both these viroids, which are members of the same taxonomic subgroup of viroids, were found in the vascular tissues as well as in the nuclei of mesophyll cells of infected host plants. At the subnuclear level, however, CEV was distributed across the entire nucleus, in contrast to CCCV which was mostly concentrated in the nucleolus with the remainder distributed throughout the nucleoplasm.encoconutcadang cadang viroidArticle