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کدام یک از مکانیسم‌های زیر در فرآیند ایجاد بافت‌های مهندسی‌شده، برای تحریک تمایز سلولی از طریق مکانیسم‌های فیزیکی و شیمیایی در داربست‌ها، به کار می‌رود؟
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Anonymous Quiz
الف) استفاده از داربست‌های هیدروژلی که قادر به ایجاد فشار هیدرواستاتیک هستند
ب) استفاده از داربست‌های سه‌بعدی با خواص الکترواتراکتیو
استفاده از داربست‌های گرافنی که قابلیت جذب و آزادسازی یون‌ها را دارند
استفاده از داربست‌های فلزی که خواص مکانیکی بالا دارند و به تحریک میکانیکی سلول‌ها می‌پردازند
The regulator said it had received information that messages containing stock tips and other investment advice with respect to selected listed companies are being widely circulated through websites and social media platforms such as Telegram, Facebook, WhatsApp and Instagram. One thing that Telegram now offers to all users is the ability to “disappear” messages or set remote deletion deadlines. That enables users to have much more control over how long people can access what you’re sending them. Given that Russian law enforcement officials are reportedly (via Insider) stopping people in the street and demanding to read their text messages, this could be vital to protect individuals from reprisals. Individual messages can be fully encrypted. But the user has to turn on that function. It's not automatic, as it is on Signal and WhatsApp. "Someone posing as a Ukrainian citizen just joins the chat and starts spreading misinformation, or gathers data, like the location of shelters," Tsekhanovska said, noting how false messages have urged Ukrainians to turn off their phones at a specific time of night, citing cybersafety. Some privacy experts say Telegram is not secure enough
from ua
