the vaccination against colds is impossible because ... it lasts for five to seven days. there are more than 80 different constantly mutating rhinoviruses. the body’s own defense mechanisms need to fight the viruses.، سؤال في المنهج التعليمي السعودي، في ساعدني نساعدك علي التعلم والدراسة وتحقيق اعلي الدرجات الدراسية.
مرحبا بك من جديد في ساعدني، بوابتك التعليمية.
سؤال :the vaccination against colds is impossible because ... it lasts for five to seven days. there are more than 80 different constantly mutating rhinoviruses. the body’s own defense mechanisms need to fight the viruses.؟
إجابة الطالب هي:
there are more than 80 different constantly mutating rhinoviruses.