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

إغلاق

عذراً، هناك مشكلة في البريد الالكتروني

إغلاق
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البيولوجيا

النيكوتين |  Nicotine

26 أبريل 2020


هو مادة كيميائية عضوية تصنعها نباتات التبغ بشكل كبير وتتوضع في الأوراق ولها تأثير فيزيواوجي ضار على جسم الإنسان فهي تؤدي الى تضيق الاوعية الدموية في جسم الانسان .