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Testis response to low doses of cadmium in Wistar rats
Although it is well known that cadmium (Cd) causes adverse effects on male rat reproductive organs, few studies have quantified alterations caused by its low doses. Quantification of theseExpand
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Ultrastructural analysis of spermiogenesis in Iguana iguana (Reptilia: Sauria: Iguanidae).
Spermiogenesis in the lizard, Iguana iguana, was studied by transmission and scanning electron microscopy. During this process, structures such as the acrosomal complex in the spermatid head and theExpand
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Antioxidative and in vitro antiproliferative activity of Arctium lappa root extracts
BackgroundArctium lappa, known as burdock, is widely used in popular medicine for hypertension, gout, hepatitis and other inflammatory disorders. Pharmacological studies indicated that burdock rootsExpand
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Ultrastructural, histological and histochemical characteristics of the epithelial wall of the seminal vesicle of mature Scaptotrigona xanthotricha moure males (Hymenoptera, apidae, meliponini)
The seminal vesicles of mature Scaptotrigona xanthotricha males were investigated using light microscopy, histochemistry and transmission electron microscopy. The globular seminal vesicles were ~450Expand
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Structure and ultrastructure of the spermatozoa of Bephratelloides pomorum (Fabricius) (Hymenoptera: Eurytomidae)
Abstract The spermatozoa of Bephratelloides pomorum are very long and fine. Each spermatozoon measures about 620 μm in length by 0.38 μm in diameter and, when seen under the light microscope, appearsExpand
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Cytological steps during spermiogenesis in the house sparrow (Passer domesticus, Linnaeus).
Spermiogenesis of the domestic sparrow was investigated with the light and electron microscopes and a step by step classification is proposed. Three cell populations corresponding to early, mid andExpand
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Histomorphometric evaluation of the neotropical brown brocket deer Mazama gouazoubira testis, with an emphasis on cell population indexes of spermatogenic yield.
Information on the reproductive biology of neotropical cervids is scarce. Therefore, the aim of this study was to perform biometric, histologic and stereologic analyses of the brown brocket deerExpand
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Sperm ultrastructure and spermatogenesis in the lizard, Tropidurus itambere.
  • A. Ferreira, H. Dolder
  • Biology, Medicine
  • Biocell : official journal of the Sociedades…
  • 1 December 2003
Spermatogenesis, with emphasis on spermiogenesis, is described for the lizard, Tropidurus itambere, using light microscopy, phase contrast and epifluorescence, as well as scanning and transmissionExpand
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Seasonal changes in testicular and epididymal histology of the tropical lizard, Tropidurus itambere (Rodrigues, 1987), during its reproductive cycle.
The reproductive cycles of lizards, including Tropidurus species, have been widely studied. However, few studies describe in detail the ultrastructure and the epithelial changes in the epididymis.Expand
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Structure and ultrastructure of spermatozoa in Meliponini (stingless bees) (Hymenoptera: Apidae).
In spite of their importance in the reproduction of phanerograms, few bees have received an adequate description of their sperm ultrastructure. In this study, we concluded that it was possible toExpand
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