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کدام یک از فرآیندهای زیر بیشتر احتمال دارد که در مهندسی بافت با استفاده از سلول‌های بنیادی جنینی (ESC) به تحریک تمایز سلولی در جهت بافت‌های خاص مانند استخوان یا غضروف منجر شود؟ 👩🏻💻👩🏻🔬🌿
Anonymous Quiz
1. استفاده از محیط کشت غنی‌شده با فاکتورهای رشد BMP (Bone Morphogenetic Proteins)
2. ایجاد شرایط هایپوکسی با فشار کم اکسیژن در محیط کشت
3. مهار مسیر سیگنال‌دهی Wnt به‌وسیله مهارکننده‌های خاص
4. استفاده از مواد هیدروژلی به عنوان داربست‌های سه‌بعدی بدون افزودن فاکتورهای رشد
Some people used the platform to organize ahead of the storming of the U.S. Capitol in January 2021, and last month Senator Mark Warner sent a letter to Durov urging him to curb Russian information operations on Telegram. "He has kind of an old-school cyber-libertarian world view where technology is there to set you free," Maréchal said. But the Ukraine Crisis Media Center's Tsekhanovska points out that communications are often down in zones most affected by the war, making this sort of cross-referencing a luxury many cannot afford. As a result, the pandemic saw many newcomers to Telegram, including prominent anti-vaccine activists who used the app's hands-off approach to share false information on shots, a study from the Institute for Strategic Dialogue shows. Ukrainian forces have since put up a strong resistance to the Russian troops amid the war that has left hundreds of Ukrainian civilians, including children, dead, according to the United Nations. Ukrainian and international officials have accused Russia of targeting civilian populations with shelling and bombardments.
from pl
