English
Hujayra madaniyati iste'mol qilinadigan mahsulot sifatida hujayra fabrikasi farmatsevtika kompaniyalari va vaktsina ishlab chiqarish kabi keng ko'lamli hujayra madaniyati uchun asosiy iste'molchiga aylandi. Hujayra madaniyati o'ziga xos sharoitlarni talab qiladi, ulardan steril muhit in vitro hujayra madaniyati uchun asosiy shartdir.
In vivo jonli holda, detoksifikatsiya tizimi va immun tizimi mikroorganizmlar yoki boshqa zararli moddalarning kirib kelishiga qarshi tura oladi, lekin in vitro madaniyati jarayonida hujayralar tananing immunitet tizimini himoya qila olmaydi va mikroorganizmlardan himoya qilish va zararli moddalarni zararsizlantirish qobiliyatini yo'qotadi. Hujayralar in vitro muhitda o'sishi va ko'payishini ta'minlash uchun steril ish joyini, yaxshi shaxsiy gigienani, steril reagentlar va vositalarni va aseptik ishlov berishni ta'minlash kerak. Qo'llaniladigan hujayra zavodlari, shu jumladan, C-darajali toza ustaxonalarda ishlab chiqariladi va sarf materiallarining o'zida hujayralar o'sishiga to'sqinlik qiluvchi omillar yo'qligiga ishonch hosil qilish uchun ular ishlab chiqarilgandan so'ng sterilizatsiya qilinishi kerak.
Umumiy mikrobial ifloslanishlarga mikoplazma, bakteriyalar va zamburug'lar. Mikoplazmaning o'limga olib keladigan toksikligi yo'q, hujayralar bilan uzoq vaqt birga yashashi mumkin va hujayralarga potentsial ta'sir ko'rsatadi, lekin hajmi kichik va uni aniqlash qiyin. Uni liken qizil yoki Hoechst33342 bo'yash orqali aniqlash mumkin. Bakteriyalar tez ko'payadi, qisqa vaqt ichida ko'p miqdorda ko'payadi va hujayralarni o'ldirish uchun toksinlar ishlab chiqaradi. Yalang'och ko'zga ko'rinadigan, madaniy muhit yuzasida suzuvchi, ipsimon, quvursimon yoki dendritik bo'lishi mumkin bo'lgan juda ko'p turdagi zamburug'lar mavjud.
Tiyotshunoslik sohasining jadal rivojlanishi bilan bozor talabi ortib bormoqda. hujayra zavodlari uchun ham ortib bormoqda. Qaysi hujayra madaniyati sarf materiallari ishlatilishidan qat'i nazar, steril muhit hujayra o'sishini ta'minlashning asosiy shartidir.
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.