English
Hujayra fabrikalariasosan biriktiruvchi hujayralarni keng miqyosda etishtirish uchun ishlatiladi, masalan, gepatit A vaktsinasi, gepatit B vaktsinasi, suvchechak vaktsinasi va boshqalar. Hujayralarni etishtirishda ba'zida hujayralar devorga yopishib olish qiyinligini aniqlaymiz. Buning sababi nimada?
Birinchi navbatda hujayralar zavodida o'stirilganda yopishmaslik fenomenining sabablari ko'p bo'lib, ularni quyidagi jihatlardan tahlil qilish va hal qilish mumkin:
Tripsinning haddan tashqari hazm bo'lishi: tripsin hujayralarni hazm qilishga yordam beradi. Agar ovqat hazm qilish haddan tashqari bo'lsa, hujayralar faoliyati juda buziladi va hujayralar suzadi. Buni hazm qilish vaqtini qisqartirish yoki tripsin kontsentratsiyasini kamaytirish orqali nazorat qilish mumkin.
Mikoplazma bilan ifloslanish: hujayralar atrof-muhitga sezgir. Agar operator gigienaga e'tibor bermasa yoki ish muhiti va eksperimental uskunalar ifloslangan bo'lsa, bu hujayralar o'rtasidagi o'zaro kontaminatsiyaga va yopishqoqlik fenomeniga olib keladi. Agar mikoplazma bilan ifloslanganligi aniqlansa, kulturani zudlik bilan yo'q qiling.
Hujayra qarishi: Hujayra qarishi organizmning qarigan sari hujayralardagi degenerativ o'zgarishlar yig'indisi bo'lib, hujayralar o'tishdan oldin birlashgan bo'lsa, ularning yopishish qobiliyatini yo'qotadi. Yangi urug'langan hujayralar eritilishi va qayta kulturalanishi mumkin.
Bundan tashqari, agar emlangan hujayralarning boshlang'ich konsentratsiyasi juda past yoki juda yuqori bo'lsa, bu hujayralarning yopishqoqlik xususiyatlariga ham ta'sir qiladi va emlangan hujayralarning tegishli konsentratsiyasini sozlash mumkin. bu muammoni hal qiling. Hujayra zavodidan foydalanishdan oldin operatorlar hujayra madaniyati jarayoniga ta'sir qiluvchi turli ifloslanishlarni oldini olish uchun o'zlarini va atrof-muhitni dezinfektsiyalash bo'yicha yaxshi ish qilishlari kerak.
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.