髓鞘發生 的英文怎麼說
中文拼音 [suǐqiàofāshēng]
髓鞘發生
英文
myelogenesis-
We have observed the following characteristics of anatomical structure and development : ( 1 ) the primary roots belong to archetype and the lateral roots occur in the position toward the xylem of the vascular cylinder ; ( 2 ) the root endodermis consists of thicken casparian strips, and there are from two lo four layers parenchyma cells near the pericycle ; ( 3 ) the pith and resins canals are absent in the toots ; ( 4 ) secondary structure occurs in the root hair zone, and vascular cambium is formed from the parenchyma cells between the primary xylem and primary phloem ; ( 5 ) tanning materials are abundant in pericycle cells and phelloderm cells ; ( 6 ) sclereids are found in secondary phloem, and rays are rather rich in secondary xylem
結果表明：氣生不定根具有以下結構特徵和發育特點： （ 1 ）根為二原型，側根正對著木質部發生； （ 2 ）幼根內皮層細胞具凱氏帶加厚，維管柱內緊挨中柱鞘內側具有2 ~ 4層大型薄壁細胞； （ 2 ）根中無髓和樹脂道； （ 4 ）次生結構發生於根毛區，維管形成層由初生木質部和初生韌皮部之間的薄壁細胞轉化形成； （ 5 ）中柱鞘和栓內層細胞富含單寧類物質； （ 6 ）次生韌皮部有石細胞，次生木質部射線發達。The red blood cells of a normal person, for instance, age and die in 120 days. new blood cells are formed in bone marrow cells to ensure normal functioning of the human body. however, a vitamin b12 deficiency can make the red blood cells dysfunctional or prevent their successful formation, which in turn causes megaloblastic anemia anemia in which abnormally sized red blood cells are found in the blood. in some cases, prolonged vitamin b12 deficiency can deter the formation and functioning of myelin, subsequently leading to neuritis inflammation of the nerves or incomplete brain development
例如，人類正常的紅血球每120天便會老化死亡，所以骨髓細胞會持續產生新的紅血球，以維持人類正常之身體功能，所以如果缺乏維他命b12 ，便容易造成紅血球生合成功能不全，進而導致巨大型紅血球貧血megaloblastic anemia又例如，因長期缺乏維他命b12 ，會造成神經髓鞘myelin生合成功能不全，進而導致神經炎及腦部發育不全等等。( 6 ) pdgf may initiate neuronal differentiation in nsc. nsc induced by pdgf, transcription and translation level of different thrs genes were up - regulated compared with the nsc induced by serum. the results made a great foundation for the further research of the important role of thrs during the cns development, and have much clinical significance on therapy of cretinism ^ subcretinism a
Thr各亞型在不同分化細胞中表達不一致： （ 0l ；能誘導nsc向少突膠質細胞分化，並通過thr各亞型的時空表達來發揮其重要生理作用門印叩樸能引發vc向神經幾分化，與10血清誘導分化相比能在轉錄與翻譯水平上提高nsc分化后thr各亞型的表達本研究結果將為深入研究t在腦發育中的作用提供寶貴的實驗依據，並對克汀病、亞克汀病以及ms脫髓鞘病等的臨床治療提供新途徑，具有重要指導意義。
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