[Has the crystalline lens any effect on the invagination process of ocular cupula in the chick embryo?].
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Biomedical subjects
Publications and source records attributed to D Ruano-Gil.
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A study has been made, using an electronic microscope, of the mucosa of the lower third of the ureter of rats, including a description of three kinds of cells with their own ultrastructural characteristics. One may emphasize the presence of intraepithelial nerve endings and chromaffin type granular formations. In some cells, adjacent to the basal membrane, there is also a perinuclear structure described, consisting of tonofilaments (perinuclear crown of tonofilaments) which it is thought could affect the genesis of distension stimuli.