retículo endoplásmico rugoso, eucromatina e heterocromatina. Da mesma maneira, quantificou-se a relação núcleocitoplasma e a área de cada tipo celular . A partir d’estudis de citologia, la cromatina es pot separar en dos subtipus diferents: eucromatina i heterocromatina. Així, l’heterocromatina originalment va ser. Heterocromatina Compactación del ADN Eucromatina Es una forma de la cromatina ligeramente compactada con una gran cantidad de genes.
|Published (Last):||16 December 2018|
|PDF File Size:||19.4 Mb|
|ePub File Size:||5.25 Mb|
|Price:||Free* [*Free Regsitration Required]|
Send this link to let others join your presentation: Eucromatina y heterocromatina view of the above, it seemed important to study the morphological and morphometric differences observed between the temporo-mandibular joint disc fibroblasts pertaining eucromatina y heterocromatina normal rabbits and those whose changes in their phenotype generated by a daily stimulation with infrared laser for a period of 10 consecutive days as the cause of modifications that would heterocromatona the alteration of its gene expression.
In the electronic micrographs obtained from the normal as well as the irradiated fibroblasts Fig. Creating downloadable prezi, be patient. Volumetric fraction of the cellular component Pa: Creating downloadable prezi, be patient.
EUCROMATINA Y HETEROCROMATINA PDF DOWNLOAD
Points having an incidence over the component of eucromxtina investigation Pt: Histoenzymology and electron microscopy study. Considering that study of Cell Biology demonstrates that as long as the cells are stimulated, its components are subject to qualitative, quantitative and surface modifications, the analysis of electronic micrographs show eucromatina y heterocromatina the modification of different components reflects into cellular function, pointing out the susceptible changes to be evaluated and compared between the normal and stimulated cells in relation to its morphological and morphometric aspects that determine eucromatina hetdrocromatina heterocromatina ultra-structural modifications pattern characterizing the radiation stimulation, in this biological model.
Transmission electronic micrographs of normal and irradiated fibroblasts were obtained with final increase of Stereological Method Beginning with the blocks for electronic microscopy, ultra fine slices were obtained in which each one of the cellular types were micrographed with an augmentation of Results are in Figure 3.
The present results differed from hegerocromatina obtained by Chomette et al.
Cuando se alimenta a las celulas con el precursor de RNA [H3] uridina radiactiva que marca el RNA, que despues se ija, se secciona y se uecromatina a una autorradiografia,los grumos de heterocromatina pertenecen sin marca, lo que indica que tienen poca o ninguna actividad transcripcionl.
In view of the above, it seemed important to study heterorcomatina morphological and morphometric differences observed between the temporo-mandibular joint disc fibroblasts pertaining to normal rabbits and those whose changes in their phenotype generated by a daily stimulation with infrared laser for a period of 10 consecutive days eucromattina the cause of eucroomatina that would entail the alteration of its gene expression.
It could be concluded that the cellular function reflected in collagen synthesis and secretion remained constant in both cellular types.
Total points having an incidence on the investigated cell. The results derived from the morphometric comparative study between the normal and irradiated fibroblasts indicated that there were significant differences with respect to the volumetric fractions of euchromatin and heterochromatin and fundamentally in the cellular areas of both types. Creating heterocromatian prezi, be patient. April 10, ; Revised: The present results differed from those obtained by Chomette et al.
Junqueira heterocromarina Salles, Check out this article eucromatina y heterocromatina learn more or contact your system administrator.
EUCROMATINA Y HETEROCROMATINA PDF
Hterocromatina cellular area pertaining to the irradiated fibroblasts showed an accentuated decrease, equivalent to 40 square microns in relation to the normal fibroblasts Table 1. Gordon and Breach, London. It would be eucromtaina to recall that this effect, a product of the radiation, decreased the area of the irradiated cell to one half, 82 to 40 square microns transforming it in the typical morphology of a “juvenile” fibroblast, making it tempting to suppose that this situation was the translation of a change in the gene expression modulated by these infrared stimulations.
Albatros PDF i like sharing, but it is not heterocromaina easy as seems. Estos investigadores demostraron que la regulacion era llevada a cabo por proteinas, y que estas se asociaban a ciertas zonas especificas de los genes llamadas regiones reguladoras. Feasibility of wound dressing transillumination.
Un cromosoma es la estructura que resulta del empaquetamiento del ADN y las proteinas previo a la division celular eucromatina y heterocromatina su segregacion posterior a sus celuals hijas. The volumetric fractions occupied by the nucleus as well as the rough endoplasmatic reticule RER manifested in great dilatated cisterns were maintained constant in the normal fibroblasts as well as in the irradiated fibroblasts.
In the same manner, the nucleus – cytoplasmatic relation and the area heterocromatija each cellular type were quantified. Constrain to simple back and forward steps. Pogrel, MA; Chen, J. eucgomatina
Present to your audience. Subsequently, it was submitted to a wash solution of 6 g eudromatina NaC1 and 73 g of sucrose dissolved in 1 l of distilled water. Total points having an incidence on the investigated cell For the calculation of the cellular area, a Polar Ott Kempte, Bayern Germany Planimeter was used.
Add a personal note: The difference in the density of the cytoplasm observed in the electronic microscopy, as well as the decrease of the visualized eycromatina area in the irradiated fibroblasts, with respect to the normal ones, constituted an optimum representation of the effect that the infrared laser stimulations generated in this cell type.
They were prepared for eucromatlna electronic microscopy. The cellular area pertaining to the irradiated fibroblasts showed an accentuated decrease, equivalent to 40 square microns in relation to the normal fibroblasts Table 1. Neither you, nor the coeditors you shared it with will be able to recover it again. La longitud de un brazo es mayor que la del otro.
Eucromatina – Wikipedia, a enciclopedia libre
Send the link below eucromatina y heterocromatina email or IM. Considering that study of Cell Biology demonstrates that as long as the cells are neterocromatina, its components are subject to qualitative, quantitative and surface modifications, the analysis of electronic micrographs show how the modification of different components reflects into cellular function, pointing out the susceptible changes to be evaluated and compared between the normal and stimulated cells in relation to its morphological and morphometric aspects eucromatija determine the ultra-structural modifications pattern characterizing the radiation stimulation, in this biological model.
Controla todas las actividades celulares. Check out this article to learn more or contact your system hfterocromatina. They were prepared for transmission electronic microscopy.