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ما هو الجزء الوحيد في الجسم الذي لا توجد به أوعية دموية؟

Keep going العين 25 مايو 2017

الجزء الوحيد في الجسم الذي لا توجد به اوعية دموية هو (الطبقة الأمامية الشفافة التي تغلف العين) القرنية ولأن أي نسيج في الجسم يحتاج إ...

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