scholarly journals SOME HISTOLOGICAL OBSERVATION OF THE EYE IN THE FISH (Mystus pelusius)

2021 ◽  
Vol 22 (1) ◽  
pp. 105-111
Author(s):  
J.Y. AL-Fayas
Keyword(s):  
Connective Tissue ◽  
Characteristic Feature ◽  
Histological Observation ◽  
Pigmented Epithelium ◽  
Connective Tissue Stroma

The eyes of 50 fishes (Mystus pelusius) were located in protective myodome of the skull and were basically made up of an elongated globe. The comeal epithelium was composed of stratified squamous non-keratinized. The iris bends sharply inward over the lens and consisted of richly vasculared connective tissue stroma and a pigmented epithelium. The sclera was cartilaginous. The choroid was made of connective tissue and containing choriocapillaris. Longe single, short single and double cones and rods was the characteristic feature of the retina.

Induction and Differentiation of Dental Epithelium in Vivo and in Vitro

1982 ◽  
Vol 40 ◽  
pp. 142-145
Author(s):  
E. J. Kollar
Keyword(s):  
Connective Tissue ◽  
Oral Mucosa ◽  
Basal Lamina ◽  
Functional Derivatives ◽  
Specific Source ◽  
Dental Epithelium ◽  
Connective Tissue Stroma

The differentiation and maintenance of many specialized epithelial structures are dependent on the underlying connective tissue stroma and on an intact basal lamina. These requirements are especially stringent in the development and maintenance of the skin and oral mucosa. The keratinization patterns of thin or thick cornified layers as well as the appearance of specialized functional derivatives such as hair and teeth can be correlated with the specific source of stroma which supports these differentiated expressions.

scholarly journals Cartilaginous Choristoma of the Gingiva: A Rare Clinical Entity

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Ramalingam Suganya ◽  
Narasimhan Malathi ◽  
Subramani Vijaya Nirmala ◽  
Chinnaswami Ravindran ◽  
Harikrishnan Thamizhchelvan
Keyword(s):  
Connective Tissue ◽  
Histopathological Examination ◽  
Clinical Entity ◽  
Fibrous Connective Tissue ◽  
Rare Clinical Entity ◽  
Normal Cells ◽  
Connective Tissue Stroma

Choristomas are rare entities which are aggregates of microscopically normal cells or tissues in aberrant locations. They are a “heterotopic” rest of cells, as they appear as a tumor-like mass. Herein we report a case of cartilaginous choristoma in a 54-year-old male who presented with a swelling on right lower gingiva. The histopathological examination revealed features of a well circumscribed mass of mature cartilage in a dense fibrous connective tissue stroma.

HORMONAL REGULATION OF CELL DIVISION IN EPITHELIAL AND CONNECTIVE TISSUES OF THE MOUSE UTERUS

1968 ◽  
Vol 41 (3) ◽  
pp. 363-371 ◽  
Author(s):  
L. MARTIN ◽  
C. A. FINN
Keyword(s):  
Cell Division ◽  
Connective Tissue ◽  
Hormonal Regulation ◽  
Stromal Cell ◽  
Glandular Epithelium ◽  
Connective Tissues ◽  
Mouse Uterus ◽  
Large Numbers ◽  
Stromal Response ◽  
Connective Tissue Stroma

SUMMARY Progesterone treatment significantly altered the response of the mouse uterus to oestradiol-17β. Oestradiol given alone produced many mitoses in the luminal and glandular epithelia but not in the connective tissue stroma. After treatment with progesterone this pattern was reversed and oestradiol produced many mitoses in the stroma but few in the epithelia. Production of stromal cell division was influenced by the dose of progesterone and by the period of treatment; a single day of treatment greatly reduced the numbers of epithelial mitoses produced by oestradiol but did not greatly increase stromal mitosis. At least 3 days' treatment was necessary for a maximal stromal response. Doses of oestradiol sufficient to inhibit implantation and deciduomata production did not reverse the stromal response but did overcome, in part, the progestational suppression of epithelial mitosis, producing large numbers of mitoses in the luminal but not in the glandular epithelium.

scholarly journals Structured pancreas changes in deadaptation process to high altitude

2009 ◽  
Vol 8 (1(2)) ◽  
pp. 69-71
Author(s):  
T. N. Slynko ◽  
M. Ya. Velikorodova ◽  
N. N. Zarechnova
Keyword(s):  
Connective Tissue ◽  
High Altitude ◽  
Compensatory Reaction ◽  
Dystrophic Change ◽  
Significant Change ◽  
Connective Tissue Stroma

Study of the pancreas of the rats at different periods deadaptation to valley, after 60 day adaptations to mountain has revealled significant change, which at the first periods of the study (7, 15 day) were concluded in edema stroma, inflammatory round cells, plethora container and grousing connective tissue between share and around acinus. At late periods of the study dominated change, expressing grousing connective tissue stroma ferrics with atrophy acinus parenchyma and dystrophic change acinous hutches (picnosis, vacuolization of cytoplasm). Deadaption has found the weakening an compensatory reaction with prevalence destruction processes in pancreas.

The neck and chest glands of the Australian hopping-mice, Notomys

1975 ◽  
Vol 23 (2) ◽  
pp. 151 ◽  
Author(s):  
CHS Watts
Keyword(s):  
Connective Tissue ◽  
Adult Males ◽  
Pregnancy And Lactation ◽  
Group Members ◽  
Anatomy Of The Neck ◽  
Neck Gland ◽  
Species Being ◽  
Territorial Marking ◽  
Connective Tissue Stroma

The gross and microscopical anatomy of the neck glands of Notomys alexis, N. mitchellii, N. cervinus and N. fuscus is described. In N. alexis, N. mitchellii and N. fuscus the glandular area was composed of a sheet of sebaceous-type glands supported by a small amount of connective tissue. The gross morphology of the glandular area varied between these three species, being simplest in N. mitchellii and most complex in N. fuscus. N. cervinus had no neck gland, but males had a gland made up of a mass of lobules separately embedded in a connective tissue stroma in the sternal region. In all species the glandular area was active in all adult males, but in females only during pregnancy and lactation. It is considered that territorial marking and marking of group members, including newborn young, are among the most likely uses of the glands.

Ultrastructural Evaluation and Pathophysiology of Testicular Sertoli Cell Neoplasms from Dogs With a Syndrome of Hyperestrogenism

1973 ◽  
Vol 31 ◽  
pp. 384-385
Author(s):  
C. C. Capen ◽  
S. L. Martin
Keyword(s):  
Connective Tissue ◽  
Sertoli Cell ◽  
Testicular Neoplasms ◽  
Neoplastic Cells ◽  
Specific Objective ◽  
Pathologic Findings ◽  
Estrogenic Hormones ◽  
Excessive Secretion ◽  
Circulating Levels ◽  
Connective Tissue Stroma

A syndrome of feminization associated with testicular neoplasms has been reported frequently in male dogs but occurs rarely in man and other species. Although an excessive secretion of estrogenic hormones has been suspected on the basis of clinical and pathologic findings, elevated circulating levels have not been demonstrated conclusively. The specific objective of this investigation was to evaluate ultrastructural1y functional Sertoli cell neoplasms from 5 male dogs with feminization and to correlate these findings with the results of estrogen assays.The affected testes were enlarged, irregularly lobulated, firm and were retained in the abdomen of all dogs (Fig. 1A). The neoplastic cells were spindle-shaped or polyhedral and formed distinct tubules separated by a delicate connective tissue stroma (Fig. 1B).

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