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of 84
pro vyhledávání: '"F, Hrudka"'
Autor:
F. Hrudka
Publikováno v:
Andrologia. 15:310-321
An acrosomo-nuclear syndrome in sperm of an infertile semicryptorchid dog is described. Based on an EM study of developing and mature sperm the syndrome is defined by simultaneous occurrence of these symptoms: 1) intranuclear inclusions of acrosomal
Autor:
H.O. Goyal, F. Hrudka
Publikováno v:
Andrologia. 13:292-306
Summary The light and electron microscopic structure of efferent ductules (ED) has been investigated in the mature intact, treated, and immature bulls. On a morphological basis, ED could be subdivided in two major segments. The proximal segment (near
Autor:
F. Hrudka
Publikováno v:
Andrologia. 11:337-353
A revised cytochemical procedure for demonstrating sperm oxidoreductases is presented in an attempt to standardize its use in comparative and experimental studies. Its detailed description includes improved incubation techniques, preparation of media
Autor:
F. Hrudka, Alexander C.O. Evans, Roger A. Pierson, L.M. McDougall, Norman C. Rawlings, A. Garcia
Publikováno v:
Theriogenology. 46(2)
Nine groups of bull calves (n = 5 to 6 per group) were castrated every 5 wk from 5 to 45 wk of age, and the stages of spermatogenesis were identified histologically. Prior to castration, the testes of each calf were examined by ultrasonography, and t
Autor:
F, Hrudka, W K, Latshaw
Publikováno v:
Journal of submicroscopic cytology and pathology. 25(1)
Light and electron microscopy were employed in studying morphologic heterogeneity in Leydig cells (LC) in situ, as manifested in a chimeric mouse. This mouse was chosen to take advantage of increased LC concentration in territories of agametic tubule
Publikováno v:
Archives of andrology. 27(3)
Anomalies of centriolar derivatives were identified in ejaculates and testicular and tracheal biopsies of a sterile stallion, using light, scanning, and transmission electron microscopy. LM revealed that over half the sperm population had only a vest
Publikováno v:
Archives of Andrology. 13:37-57
The extent and nature of seminal anomalies in colitic and ileitic patients were investigated using cytological, cytochemical, and electron microscopical methods. In addition to basic seminal variables, the gross and fine structure of spermatozoa were
Autor:
F. Hrudka
Publikováno v:
Journal of Ultrastructure Research. 63:1-19
A technique for investigating the fine topography, changes in the conformation, and other morphologico-functional correlations on isolated sperm mitochondria has been described and applied in this study. The technique is simple and provides a high yi
Publikováno v:
Theriogenology. 17:611-621
A Simmental bull with a history of low fertility, both by natural service and artificial insemination, was presented for examination. Two previous semen evaluations had revealed no specific semen abnormalities that would support the breeding history.
Publikováno v:
Cells Tissues Organs. 135:269-274
Six chimeras, including 4 phenotypic males and 2 females, were produced by aggregation of F¶ (C57BL × BALB/c) and Swiss white embryos. All were fertile, except 1 male, whose deviation in testicular structure prompted this light- and electron-micros