Question and answer
Vaccines are effective in preventing disease because they A. prepare the immune system to recognize and destroy pathogens. B. combine with pathogens to inactivate them. C. contain specific B lymphocytes. D. consist of bacteria that could infect healthy cells.
s
Vaccines are effective in preventing disease because they prepare the immune system to recognize and destroy pathogens.
sipichapie|Points 5010|
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Asked 11/13/2014 9:25:53 PM
Updated 11/14/2014 7:02:03 AM
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This answer has been confirmed as correct and helpful.
Edited by jeifunk [11/14/2014 7:02:01 AM], Confirmed by jeifunk [11/14/2014 7:02:03 AM]
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Updated 11/25/2016 4:56:59 AM
1 Answer/Comment
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Added 11/25/2016 4:56:55 AM
This answer has been confirmed as correct and helpful.
Confirmed by Andrew. [11/25/2016 8:17:23 AM]
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