HISTOLOGICAL STUDY OF THE SKIN DURING DIFFERENT DEVELOPMENTAL STAGES OF MAKOYEE SHEEP FETUSES

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

SHAHROUZ R.; AHMADI A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Veterinary Research Year:2004 | Volume:59 | Issue:3 Page(s): 215-220

Download Full-Text

Persian Verion

View:

1,710

Download:

Cites:

Information Journal Paper

Title

HISTOLOGICAL STUDY OF THE SKIN DURING DIFFERENT DEVELOPMENTAL STAGES OF MAKOYEE SHEEP FETUSES

Author(s)

SHAHROUZ R. | AHMADI A. | Issue Writer Certificate

Keywords

SKINQ2

HISTOGENESISQ2

SHEEPQ2

FETUSQ2

Abstract

Objective: Study of the HISTOGENESIS of skill in SHEEP and detennine the relation between developmental stages of FETUSes and histological changes of their SKIN. Design: Developmental investigation on the SKIN in SHEEP at the different stages of antenatal growth. Animals: A total of 75 apparently healty embryoes were collected from Urmia abatoir. Procedure: Immediately after slaughter H&E of SHEEP, the embryoes were taken out and their C.R lengths measured. The skill specimens were taken from face, neck, sholder, and forelimb of the FETUSes. The specimens were fixed in 10% formaldehyde solution and processed through routine paraffin embedding, cut at 5-7µ and staind with H&E, Van Giesson, and Verhoof methods, for study fibroblasts, collagen, and elastic fibers respectively. Results: This study revealed that in second half of second month of antenatal life the epidermis consisted of 1-2 cuboidal epithelial cells, whereas at 61 -65 days FETUSes, it was made up of stratified squamous or cuboidal type of epithelium. The melanin contaning cells were seen at the end of this stage. During this period clusters of epidermal cells accumulation were seen at epidennis, and more likely here were primordial hair follicles which were growing from epidennis towards the dermis. Mesenchymal cells were gathering around this structures. At the first half of third momth the collagen, elastic and reticular fibers, fibroblasts and leukocytes were appeared between mesenchymal cells. At the second half of third month the epidermis was apparently stratified squamous with the same degrees of cornifications. At first half of fourth month, an increase in thickness of epidermis was observed and at this time the hair follicles were in the form of inverted cup. The sebaceous and sweat glands were in bud froms around the hair follicles at 90-95 and 115- 120 days respectively. The developmental changes were faster in sholder than the other regions. Conclusion: This study showed that at first half of second month the epidermis of developing FETUSes were contaning simple cuboidal epithelial cells without apparent differentiations, whereas at the end of this stage beginning of differentiation was observed. The superficial layer of the two layered epidermis known as periderm. This cells were appaered in amniotic fluid at first half of prenatal period. It presumed that, the mesenchymal tissue in vicinities of epidermis has inductive role on the differentiation of hair follicles, sebaceous and sweat glands. However we conclude that the SKIN and its associated structures are differentiating from second half of fourth month of antenatal life.

Cites

No record.

References

No record.

Cite

APA: Copy

SHAHROUZ, R., & AHMADI, A.. (2004). HISTOLOGICAL STUDY OF THE SKIN DURING DIFFERENT DEVELOPMENTAL STAGES OF MAKOYEE SHEEP FETUSES. JOURNAL OF VETERINARY RESEARCH, 59(3), 215-220. SID. https://sid.ir/paper/35336/en

Vancouver: Copy

SHAHROUZ R., AHMADI A.. HISTOLOGICAL STUDY OF THE SKIN DURING DIFFERENT DEVELOPMENTAL STAGES OF MAKOYEE SHEEP FETUSES. JOURNAL OF VETERINARY RESEARCH[Internet]. 2004;59(3):215-220. Available from: https://sid.ir/paper/35336/en

IEEE: Copy

R. SHAHROUZ, and A. AHMADI, “HISTOLOGICAL STUDY OF THE SKIN DURING DIFFERENT DEVELOPMENTAL STAGES OF MAKOYEE SHEEP FETUSES,” JOURNAL OF VETERINARY RESEARCH, vol. 59, no. 3, pp. 215–220, 2004, [Online]. Available: https://sid.ir/paper/35336/en

Related Journal Papers