وفر 50٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.

اشترك الآن

تمت عملية الاشتراك بنجاح

إغلاق

عذراً، عذرا،أنت مشترك مسبقاً بالنشرة البريدية

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عذراً، هناك مشكلة في البريد الالكتروني

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الطب

مضيف ناقل |  Vectors

26 أبريل 2020


هو كائن حي لايسبب المرض بحد ذاته انما ينقل الى طرف ثالث العوامل المسببة للمرض التي تسكن به او تصيبه كالبعوض في الملاريا ،فالطفيلي يحتاج أن يمضى فترة من حيانه في هذا الكائن الذي ينقله الى دم الانسان .