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Investigation of the morphological and histological features of the testes of pigeon (Columba livia domestica) in pre-puberty and post-puberty
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Background: Morphological and histological examination of the testes can provide a suitable insight into the health of the reproductive system. Aim: The objective of the current study was to investigate the morphological and histological features of the testes of local pigeons (Columba livia domestica) at mature and immature stages of age. Methods: Two groups of collected specimens underwent macroscopic and microscopic investigation to evaluate and compare the main general properties of their testes. Results: The findings indicated that the testis has an oval shape in both pre-puberty and post-puberty stages, situated on the inner side of the kidney towards the caudal extreme of the lungs. However, the left testis was bigger than those on the right side. In the pre-puberty stage group, the testicular parenchyma was small, and almost collapsed seminiferous tubules containing a single layer of Spermatogonia and Sertoli cells. In contrast, in the post-puberty stage, the parenchyma space between seminiferous tubules was small, and tubules adhered closely to each other. Also, mature cells including sertoli, spermatogonia, and spermatocytes were noticed to spread within the tubules. Conclusion: The change in the histological structure of testes before and after maturity may help to evaluate the complexity of the male reproductive system of pigeons and draw attention to the organization of sex hormones and the function of several types of cells within the testes.

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Publication Date
Fri Oct 01 2010
Journal Name
Iraqi Journal Of Physics
Investigation of plasma characteristics of center region of post cylindrical magnetron sputtering device
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A d.c. magnetron sputtering system was designed and fabricated. The chamber of this system is consisted from two copper coaxial cylinders. The inner one used as the cathode and the outer one used as anode with magnetic coil located on the outer cylinder (anode). The axial behavior of the magnetic field strength along the cathode surface for various coil current (from 2A to 14A) are shown. The results of this work are investigated by three cylindrical Langmuir probes that have different diameters that are 2.2mm, 1mm, and 0.45mm. The results of these probes show that, there are two Maxwellian electron groups appear in the central region. As well as, the density of electron and ion decreases with increases of magnetic field strengths.

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Publication Date
Wed Jan 09 2019
Journal Name
Преподаватель ХХi век | مجلة الاستاذ في القرن الواحد و العشرين
Arabic borrowings in the Russian language and features of their actualization in the modern period
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Publication Date
Mon Jan 01 2018
Journal Name
Plant Archives
The morphological and pollen grains study of Tropaeolum L. (Tropaeolaceae) in Iraq
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The current study included a detail morphological study of all parts of the two species of the genus Tropaeolum L. (Tropaeolumceae) cultivated in different gardens, the roots, stems, leaves, flowers and fruit were studied in detail, also the pollen grains were studied, and there are photographs for all that parts were putted. A specimens of that taxa were studied in some Iraqi herbaria. The study found that there are many characters were used in differentiation of two species under study.

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Publication Date
Thu Jan 11 2024
Journal Name
Научный Форум
Structural and semantic features of military metaphors in the modern Russian press
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Publication Date
Mon Sep 09 2024
Journal Name
مجلة قسم الدراسات اللغوية و الترجمية التابعة لبيت الحكمة
- Structural and semantic features of predicative adverbs IN THE RUSSIAN SYNTAX SYSTEM
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Publication Date
Thu Jul 01 2021
Journal Name
Journal Of Physics: Conference Series
Histological structure of the Tongue in Mongoose (Herpestes javanicus)
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The aim of the present study was to investigate the histological structure of the tongue in Mongoose (Herpestes javanicus) and its related to the feeding pattern. Five adult animals were used in this study . The tongues were dissected and fixed in 10% formalin, then prepared by following stages (dehydration, clearing, and embedding).The serial section(5µ) were stained with(H&E) and some special stains.The histological examination showed that the tongue consists of three tunicae (mucosa, submucosa and musclaris) and the lining epithelium of the filiform papillae is composed of keratinized stratified squamous epithelial tissue. The cylindrical papillae are covered with a highly keratinized stratified squamous epithelial tissue, whereas the k

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Publication Date
Sun Mar 06 2011
Journal Name
Baghdad Science Journal
Histological Structure of the Integument in Mastacembelus mastacembelus (Solander)
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The histological structure of integument in Mastacembelus mastacembelus have been investigated from skin fragments cut from nine regions at body surface. The results revealed that the integument of the fish investigated comprises three principal layers- the epidermis, the dermis (corium) and the subcutis-All the three principal layers may further be divided into secondary layers according to the function performed by their cells. The epidermis may further divided into three layers- the outermost epithelial coverage, the middle layer and the basal layer (stratum germinatiuum)-The dermis consists of a relatively thin upper layer of loose vascular connective tissue called the stratum laxum and a thick lower compact layer- the stratum compactu

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Publication Date
Wed May 02 2018
Journal Name
Indian Journal Of Natural Sciences
Histological and Histochemical Characters of the Pancreas in the Adult Indigenous Gazelle (Gazella subgutturosa)
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LO Hamza, Indian Journal of Natural Sciences, 2018 - Cited by 3

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Publication Date
Tue Jul 25 2017
Journal Name
J. Entomol. Zool. Studies
Histological and histochemical observations of the small Intestine in the indigenous Gazelle (Gazella subgutturosa)
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LO Hamza, NA Al-Mansor, J. Entomol. Zool. Studies, 2017 - Cited by 14

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Publication Date
Fri Mar 30 2018
Journal Name
International Journal Of Science And Research
The Effect of Age 0nLeptin Hormone and Some Biochemical Parameters in Patients Pre-Dialysis
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To evaluate impact the difference in stages ofage and related incidence of hemodialysis patients.Two hundred and fifty patients undergoing hemodialysis were collected from general hospital in Baghdad city /Iraq. The samples with renal failure before hemodialysis were divided into (138) male,( 112)female. The sera were separated from samples to physiological investigation. We found that renal failure was more predominant among the patients ages group ranging from (51-70) years old. The results shows A significant increase in the levels of urea, creatinine, in younger patients (≤ 30 years) when compared with older patients (>70 years). Furthermore a significant decrease in serum levels of total protein in patients in older patients (>7

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