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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 108 (1970), S. 475-486 
    ISSN: 1432-0878
    Keywords: Leydig cells ; mice ; Differentiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Testicular interstitial cells in ddN mice aged 3 to 28 days were studied with the electron microscope. They differed from those in adult mice in several respects: 1) Agranular endoplasmic reticulum and granular endoplasmic reticulum were mixed in the youngest animals, while they were separated topographically in 28 day mice. 2) Mitochondria were usually round between 3 to 10 days, while oval or rod-shaped mitochondria predominated in 28 day animals. Intramitochondrial granules were absent between 3 to 10 days but were occasionally observed in the older animals. 3) Glycogen particles were occasionally arranged in irregular clusters in 3 day old animals, while these structures were absent in the older animals. 4) Membranous whorls were recognized only in 28 day mice. 5) Villous processes on the cell surface facing the perivascular space were poorly developed in the youngest animals, while in 28 day mice they were as prominent as in the adult mouse.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0878
    Keywords: Prostatic duct ; Epithelium ; Basal cell ; Muscular coat ; Fine structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The ducts of the rat ventral prostate have been studied by light and electron microscopy for elucidation of their role in prostatic function. The epithelium of the main duct consists of simple columnar cells and polymorphic basal cells. The columnar cells show no indication of secretory activity. The basal cells contain bundles of filaments of 5–6 nm thickness and numerous pinocytotic vesicles. The ducts are surrounded by layers of circular smooth muscle cells interspersed with nerve axons. On ultrastructural grounds the ducts do not appear to secrete material into the seminal fluid, but apparently the muscular coat actively helps drain the gland during ejaculation.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 242 (1985), S. 519-525 
    ISSN: 1432-0878
    Keywords: Prostate gland ; Basal cell ; Fine structure ; Stereology ; Dog
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary There are two distinct types of epithelial cells in the lining of the glandular acini of the prostate in adult male Beagle dogs, i.e., the columnar secretory epithelial cells and the basal cells. In contrast to the secretory epithelial cells, basal cells exhibit an abundance of micropinocytotic vesicles on their basal surface. Blood capillaries are often found in the stromal tissue in close proximity to these cells and their walls frequently display chains of fenestrations bridged by diaphragms. Stereological analysis shows that the volume density of the basal cells in the reference volume of acinar parenchyma is 0.056, and there are approximately 132.14 million cells per cm3 of prostatic tissue. An average basal cell has a volume of 373.5 μm3, and the volume densities of its nucleus, rough endoplasmic reticulum, Golgi apparatus, mitochondria and micropinocytotic vesicles, are 0.49, 0.04, 0.04, 0.094 and 0.013, respectively. These data are distinctly different from those that have been reported for the prostatic secretory epithelial cells of the same animals.
    Type of Medium: Electronic Resource
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