Journal ArticleDOI
Fine structure of ureteric duct epithelium in the North Atlantic hagfish (Myxine glutinosa L.).
TLDR
Sparsity of basal cytoplasmic processes and mitochondria in the ureteric duct cells appears to correlate with an inability for active, energy-dependent secretory and ion transport functions.Abstract:
The epithelial cells lining the ureteric duct in the cyclostome, Myxine glutinosa, have a brush border and show specializations of their apical cytoplasm similar to those observed in absorptive proximal tubule cells in higher vertebrate species. These features and the presence of large and numerous cytosomes, presumed to contain lysosomal enzymes, indicate that the ureteric epithelium has taken over some of the functions of the proximal tubule in the “atubular” kidney of Myxine.read more
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Book ChapterDOI
Electron microscopy of the uriniferous tubules
TL;DR: This chapter describes the fine structure of the uriniferous tubule and emphasizes the functional aspects for which morphologic correlates are available and presents electron micrographs that illustrate the potentialities of histochemistry as applied to fine structure research of the nephron.
Journal ArticleDOI
The opisthonephric kidney of the sea lamprey of the great lakes, Petromyzon marinus L. II. Neck and proximal segments of the tubular nephron
TL;DR: The structure of the cells of the proximal segment suggest that they are involved in endocytosis, and these cells often contain filamentous and crystalline material and are usually associated with “flocculent bodies” resembling “non-nucleoid” renal microbodies.
Journal ArticleDOI
The morphology of the kidney of the atlantic hagfish, Myxine glutinosa (L.)
TL;DR: The kidney of the Atlantic hagfish, Myxine glutinosa, consists of large, paired, segmentally arranged renal corpuscles connected to the archinephric ducts by short tubules.
Journal ArticleDOI
An electron microscopic investigation of rumen mucosa.
TL;DR: Bovine rumen mucosa, capable of functioning in absorption, metabolism, and protection, appeared in the electron microscope as a parakeratotic stratified squamous epithelium as well as cells comprising the substratum basale, revealing differentiation directed toward mucus formation.
Journal ArticleDOI
Factors affecting glomerular function in the pacific hagfish Eptatretus stouti (Lockington)
TL;DR: To assess the role of active processes in glomerular filtration, chemical inhibitors were added to the perfusion Ringer and Ouabain and dinitrophenol markedly reduced GFR; inhibition was probably not due to indirect effects upon the renal vasculature.
References
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Journal ArticleDOI
Hemoglobin absorption by the cells of the proximal convoluted tubule in mouse kidney
TL;DR: The formation of protein absorption droplets in the cells of the proximal convolution was studied in mouse kidney and it was suggested that phospholipids enter into the vacuoles together with hemoglobin from the tubular lumen and form membrane systems of lipoproteins in the droplets.
Journal ArticleDOI
Absorption of ferritin by rat kidney proximal tubule cells. Electron microscopic observations of the initial uptake phase in cells of microperfused single proximal tubules.
TL;DR: Ferritin was injected through micropipettes into single proximal tubules of the rat kidney and microperfusion-fixed with glutaraldehyde and analyzed by electron microscopy as discussed by the authors.
Journal Article
Transport and digestion of hemoglobin in the proximal tubule. ii. electron microscopy.
Journal Article
Electron microscopic studies of the epithelium of the proximal tubule of the rat kidney. 3. Microbodies, multivesicular bodies, and the golgi apparatus.
Ericsson Jl,Trump Bf +1 more
Journal ArticleDOI
Cellular localization of acid phosphatase activity
TL;DR: A hsistochcussical survevt of the distribution of acici l)hosPhsnttnm activity reveals an alnsost universnol occurrence of this cnzvnne in various cell types, however both the intensity and the cytologic localization of the enzynse staining reaction show coussiderabhc variat ion in different locations.