Fish testes histology

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August undefined, 2024

http://ecoursesonline.iasri.res.in/mod/page/view.php?id=40337 WebHistology: The fixed testes were processed for paraffin embedding and 7 μm paraffin sections were taken in transverse plane and stained with Ehrlich’s hematoxylin-eosin. At least 5 slides with 4 to 5 sections of the testis from different fish were examined under a Nikon microscope (Model CH3 of F100). Protein estimation: Protein contents of the …

Testes: Anatomy, definition and diagram Kenhub

Webof Fossil Fish, Amphibians, and Reptiles from Virginia by Robert E. Weems U.S. Geological Survey, Reston, VA 22092 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and Stratigraphic nomenclature U.S. Geological Survey Open-File Report Number 93-222 WebHistology offers a powerful tool in the study of reproductive health of fishes. It is routinely used for sex verification, identifying stage of development, documenting presence of intersex, tumors, parasites and other abnormalities and quantifying atresia. It can also be used for more subtle changes such as thickness of the vitelline envelope at various … songs with political meaning

FISH Test for Cancer - WebMD

WebA proper understanding of tissue and cell structure is of great importance for correct biological inferences, and particularly so in organisms used as research models. Nothobranchius spp. are short-lived freshwater fish species which are promising model organisms for toxicology, evolutionary ecology, aging and regeneration research. … WebJan 1, 2002 · Histology of the gonads is one of the tools used in reproductive studies in fish and its importance has been widely … WebThe testis of Protopterus extends the entire length of the body as a thick band closely and broadly bound to the kidney. The testis of Lepidosiren is an elongated mass and embedded in fatty tissue. The testes of teleosts are long and rounded in section. In Latimaria the right testis is two to three times larger than the left but both produce ... songs with poor in the title

Testis structure, spermatogenesis, spermatocytogenesis, …

National Center for Biotechnology Information

Fluorescence in situ hybridization (FISH) is a test that \"maps\" the genetic material in human cells, including specific genes or portions of genes. See more Because a FISH test can detect genetic abnormalities associated with cancer, it's useful for diagnosing some types of the disease. When the type of cancer has previously been diagnosed, a FISH test also may provide … See more During a FISH test using a sample of the patient's tissue, special colored dyes are attached to specific parts of certain chromosomes in order to visualize and count them under a … See more In breast cancer patients, for example, a FISH test on breast cancer tissue removed during a biopsy can show whether the cells have extra copies of the HER2 gene. Cells with extra … See more Because FISH testing is expensive and not widely available, it's not as commonly used as another breast cancer test: ImmunoHistoChemistry … See more WebOct 8, 2024 · The Histology of Fishes. The book is a multi-authored book of 18 chapters comprising the state of the art work of all relevant topics on modern fish histology from 28 authors from ten countries. The topics include Introduction to Histological Techniques, Integument, Fish Skeletal Tissues, Muscular System, Structure and Function of Electric ... small gold earrings for babyWebTestis development and ultrastructural features of spermatogenesis in Acrossocheilus fasciatus (Cypriniformes, Barbinae), a commercial stream fish, were studied using light and electron microscopy. The reproduction cycle in A. fasciatus testes is classified into six successive stages from Stage I to … songs with pony in the title

"Webindicate a favourable condition for the fish as it was greater than 2. Histological analysis had no difference in testicular structure between the treatments as compared with the control. Keywords: Testis histology and haematology, Clarias gariepinus, phytochemicals, Moringa oleifera Introduction " - Fish testes histology

Fish testes histology

Comparison of mammalian ((a) mouse) and fish ((b) zebrafish) testis ...

WebNational Center for Biotechnology Information WebApr 7, 2024 · In the testis, fshr and lhr reached maximum expression levels before the spermiation. The hormonal stimuli of 11-ketotestosterone and its receptor were significantly higher when the specimen was in reproductive activity. ... Histology. Male European hake, from different monthly sampling and with different sizes, were randomly chosen to …

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Webnature caused the metal can damage the structure of the seminiferous tubule gonads (testes). The mechanisms by which heavy metals contaminants can affect fish reproduction are several. Some pollutants are known to influence directly the reproductive cycle of the adult fish. Pollutants accumulated in adult fish WebApr 14, 2024 · A single milt-producing recipient was dissected to evaluate gonad development, revealing unilaterally developed testis with strong GFP expression. Histology showed a well-developed structure with ...

Webtesticular atrophy (Figure 3), while fish fed 1.5g NLM/kg diet, showed cystic tubules and atrophy in the testicle (Figure 4). In fish fed 2.0g NLM/kg diet, sections of the testes showed severe testicular tissue atrophy, sperm cells disintegration and necrosis (Figure 5). Histology of ovaries in T. zillii fed varying dietary levels of neem leaf meal WebDec 11, 2012 · The testes of most catfish species have digitiform projections or fringes, but some species have no fringes (Loir et al., 1989). Similar to mammals (Ahmed et al., 2012) and birds (Friedlander et al., …

WebJul 15, 2024 · Histology can be usefully used in a number of ways including: Most commonly in the differential diagnosis of disease by simple direct microscopical examination of stained tissues In conjunction with specific immunological reagents histology will allow identification of pathogenic bacteria and viruses WebTestis histology, transcription of follicle-stimulating hormone receptor (fshr) and luteinizing hormone receptor (lhr), and transcription of testis proteins involved in spermatogenesis regulation ...

WebHistology of fish testis. The testis of fish is sac-like and folded. Like the oocyte, male gametes (sperm cells) develop and mature through a series of stages. Various types of germ cells can be seen within a testis during its maturity cycle and they are: male germ cells (resting or primary spermatogonium), secondary spermatogonium ...

WebA total of 628 fish were collected in the study. Histological sections of gonads were examined for 416 individuals between 29 and 95 mm SL. Ovary development (the formation of primary oocytes and ovarian lamellae) was recognized in fish as small as 44 mm SL (Table 1). Sections from the dorsal mesentery of smaller fish revealed only beds 113 ... small gold earrings for baby boyWebApr 12, 2024 · Scrotum and coverings of the testes Scrotum is a cutaneous (skin) sac that protects the testes. It consists of two layers: most superficially is the skin, and deeper is the dartos fascia.The dartos fascia contains muscle fibers that contract when it is cold, which results in wrinkling of the scrotal skin and brings the testes closer to the body. The result … songs with porsche in the lyricsWebTopic Name: Morphology of Fish Testes. 2. Introduction The testes of fish is generally a paired elongated organ. Testis is attached to the dorsal wall of the body (in both side) by a mesorchium which is vascularized … songs with planets in the titleWebHistology and Cytology Department. The males were distinguished from the females by the examination of the ... Fish body weight RESULTS I- THE TESTES The testis of the catfish was surrounded by tunica albuginea which consisted of dense collagenous connective tissue (Fig. 1) with few fine elastic fibers (Fig. 2) and also contained smooth muscle ... small gold door knobs small gold earrings designs with priceWebJun 30, 2024 · The book is a multi-authored book of 18 chapters comprising the state of the art work of all relevant topics on modern fish histology from 28 authors from ten countries. The topics include Introduction to Histological Techniques, Integument, Fish Skeletal Tissues, Muscular System, Structure and Function of Electric Organs, Digestive System, … songs with poetry in the lyricsWebFeb 21, 1995 · The morphology and histology of the catfish testes were studied during the spawning period, finding the seasonal reproductivity in this catfish is less pronounced than in other species and the testes histological structure resembles that of other teleosts. The morphology and histology of the catfish (Parasilurus aristotelis) testes were studied … songs with positive affirmations