connective tissue derives from mezoderm and mesencyme cells derived from mesoderm.the epitel tissue is avascular.melanocytes are mostly specific to our scin.(whole epitel tissue?)fibroblasts do not go mitosis and they do not dejenerate like other cells.the fibroblasts give rise to fibrocyte and also fibrocyte give rise fibroblasts but the second condition occurs when more fibroblasts are necessary.the ribozomoses in cells are syntesized in nucleolus and cytoplazm.the myofibroblasts have two characteristic feature in sequence first they syntesize collagen fibrils(actin flamanetes) and second they are smooth muscle cells.the smooth muscle cells have gap junctions and this feature is important for their contraction.stable macrophages are not phagocyte but independent macrophages are phagocyte.some macrophages are said hemosiderin-laden macrophages.we saw these macrophages in the respiratory sistem when more blooding occurs.plasma cells are like tears in the sections hemotoxilen-eosin stained and they are watched eosiophilic.in electron microscopic visualing their nucleus seen like car wheel.the nucleus has nucleolous in the center it has mrna and rrna the other hiperchromatic area near the nucleus membran has only dna.

stem cells isolated from fat using for diseases or tissue damage is accessibility and lack of rejection.the fat deriverde stem cells secrete vaso endotelhial growth factor(vegf) and other factors which can inhibit cartilage regeneration.but ıts effect can be neutralized by antibodies.

prohibitin is a mitochondrial protein.in rats who were treated ischemia tolerance ıt was seen there was prohibitin upregulating.prohibitin reduces relesing of radical oxygen spices from mitichondria.ıt is thought that prohibitin is an endogeneus protective protein that support mitochondria's function.besides the effects of prohibitin in nerve tissue is not known exactl it is argued it protect neurons.Prohibitin reduces mitochondrial free radical production and protects brain cells from different injury modalities Ping Zhou,1,2 Liping Qian,1,2 Marilena D’Aurelio,2 Sunghee Cho,1,2,* Gang Wang,1,2 Giovanni Manfredi,2 Virginia Pickel,1,2 and Costantino Iadecola1,2

is it a dream an organ or a pice of human body can be generated from his own blood.nearly scientific experiments support this dream.a six day old embryo can be generated from blood cells.when it is compared with other models(embriyonic stem cells,skin or hear derivered stem cells and virus deppended stem cells).possibily while you are reading this post you can ask how can a cell turn back on its one step or more before its state.ıt is like getting time to back.but it is possible and ıt appears that is reliable method than others.ıt is virus-free way to handle induced pluripotent stem cells(ips).instead of viruses plasmids are used.plasmids are cause of reverting cells to a more primitive stem cells.thus it is prevented viruses' potential impact which mutate genes or initate transforming cells' cancer

do you know when an old or damaged erytrocite went to pieces by lymphocytes ıts iron is used to participate in the structure of erytroblast or it is used by liver as bile,therefore the color of the bile dark brown colored,

An embriyonic stem cell or human bone marrow stem cell.it is said embryonic stem cells have capacity to diferantie 250 cell types.for instance pancreas cell can not be generated from bone marrow stem cells because of bone marrow stem cells can be differantied into at the very most 15 cell type.when embriyonic stem cell compared with human bone marrow stem cells current state seems like an advantage but also it has some desadvantage such as laws because the embryos are unborn child and they have right to life and also they have families.there must be obtain approvel with the family.there is another problem with embryos' dna and the human enjected stem cells whose dna.in the future there can be a huge problem because of dna mismatch.

The functon of basofiles is to migrate to connective tissue whereever they become mast cells.mast cells release heparin and histamine.histamine provides vasodilatadion of vessels which promoting immune cells migrating from vessels to tissues.heparin is an antiquagilant.

today ı watched a video about stem cells.stem cells are hopeful for injured people,handicapped people or some people whose disease can be recovered by stem cells.for instance ıf pancreas stem cells can be generated for the diabetes mellitus patients or the other disases originating from pancreas ıt provides removing these disases.

helo..today ı want to explain about me.ı am anurse and ı am 32 years old.ı am married and ı have a girl whose name is azra.for a long time ı want to have an alteration in my mind.ı am a msc student ı want to improve my english and ı want to have scientific paper.on the other hand ı want to share my ideas and suggetions and interests with people

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hello.ı am a new user.ı want to share something about histology and embryology.ı am Msc student in atatürk üniversity in turkey.most of the time ı will talk about articles ı read. ı will criticize ı think the most important.
ı have just read an abstract about a study to investigate correlation between brain derivered neurotropfic factor(BDNF) expression and cognitive impairment in post stroke depression (psd) rats and to explore mechanisms of the cognitive impairment process.the middle cerebral artery was occluded for establishing a focal ischemia in rats