English
Is-serum għandu rwol insostitwibbli fit-tkabbir taċ-ċelluli u l-proliferazzjoni fil-kultura taċ-ċelluli, allura kif is-serum għandu rwol fil-kultura taċ-ċelluli, u x'inhuma r-rekwiżiti għall-ippakkjar flixkun tal-midja?
Funzjoni tas-Serum:
1. Is-sustanzi ewlenin fis-serum huma proteini, albumina, eċċ., Li jistgħu jtaffu l-pH tal-medju tal-kultura taċ-ċelluli u jżommu l-pressjoni osmotika;
2. Proteini li jorbtu bħal transferrin u proteina li torbot thyroxine jistgħu jirrikonoxxu vitamini, lipidi, metalli u ormoni oħra, eċċ., U jistgħu jingħaqdu ma 'metalli tossiċi u piroġeni biex jidditossifikaw;
3. Fibronectin, fetuin u fatturi ta 'adeżjoni fis-serum bovin tal-fetu jistgħu jippromwovu l-adeżjoni u t-tixrid taċ-ċelluli;
4. Polipeptidi bħal fattur tat-tkabbir tal-plejtlits, fattur tat-tkabbir tal-fibroblast, fattur tat-tkabbir epidermali, fattur tat-tkabbir taċ-ċelluli tan-nervituri, insulina, fattur tat-tkabbir simili għall-insulina, somatotropin, hydrocortisone, eċċ. Jistgħu jappoġġjaw id-diviżjoni u l-proliferazzjoni taċ-ċelluli u jżommu t-tkabbir logaritmiku taċ-ċelloli;
5 . Inibituri tal-protease bħal makroglobulina jistgħu jinibixxu protease u jipproteġu ċ-ċelloli mill-ħsara;
6. Is-serum huwa wkoll għani f'aċidi amminiċi, glukożju, ketoaċidi u oligoelementi flimkien ma 'proteini, li huma kollha sinifikanti għall-kultura taċ-ċelluli.
Rekwiżiti għall-fliexken tal-midja:
Serum għandu komponenti kumplessi u funzjonijiet importanti, għalhekk il-preservazzjoni u l-użu tas-serum huwa importanti ħafna. Fl-għażla ta 'fliexken tas-serum, il-korp tal-flixkun huwa ġeneralment meħtieġ li jkun trasparenti, ħieles minn DNase, RNase, piroġenu u sustanzi oħra li jaffettwaw it-tkabbir taċ-ċelluli, u ssiġillati biex jipprevjenu t-tnixxija. Ta 'min jinnota li s-serum ġeneralment jeħtieġ li jinħażen f'ambjent ta' -5 °C sa -20 °C, għalhekk il-materjal tal-flixkun tal-midja għandu wkoll jissodisfa l-karatteristiċi ta 'reżistenza għat-temperatura baxxa.
The FAI climbed 5.9 percent year-on-year in the first 11 months of 2018, quickening from the 5.7-percent growth in Jan-Oct, the National Bureau of Statistics (NBS) said Friday in an online statement.
The key indicator of investment, dubbed a major growth driver, hit the bottom in August and has since started to rebound steadily.
In the face of emerging economic challenges home and abroad, China has stepped up efforts to stabilize investment, in particular rolling out measures to motivate private investors and channel funds into infrastructure.
Friday's data showed private investment, accounting for more than 60 percent of the total FAI, expanded by a brisk 8.7 percent.
NBS spokesperson Mao Shengyong said funds into weak economic links registered rapid increases as investment in environmental protection and agriculture jumped 42 percent and 12.5 percent respectively, much faster than the average.
In breakdown, investment in high-tech and equipment manufacturing remained vigorous with 16.1-percent and 11.6-percent increases respectively in the first 11 months. Infrastructure investment gained 3.7 percent, staying flat. Investment in property development rose 9.7 percent, also unchanged.