How Does the flu Vaccine Work?
19.4 هزار بار بازدید -
9 سال پیش
-
The vaccine triggers the immune
The vaccine triggers the immune system to create antibodies, preparing the body for viral battle.
Produced by Alex Hogan
Produced by Alex Hogan
9 سال پیش
در تاریخ 1394/09/20 منتشر شده
است.
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بـار بازدید شده