Paper 1, May June 2008 | Cambridge AS - A Level Biology (9700) Past Papers
Cambridge
AS & A Level
Biology (9700)
شهریور
2008
مشاهده نمونه سوال
شامل مباحث:
AS Level
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
60 دقیقه
پیش نمایش صفحه اول فایل
Neda Bani An influenza vaccine can be made by growing the viruses in chicken eggs.
The viruses are extracted in liquid from the eggs and inactivated. The purified egg extract containing the viruses is then used as the vaccine.
What is a side-effect of using this vaccine in some people?
