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11-06-2016
Biology

contestada

What leads to long-term immunity in mammals? A. Exposure to an antigen B. Action of an antibody C. Barriers

Respuesta :

14-06-2016

exposure to antigen as this input brings the total to five answers. y or n

Answer Link

22-04-2021

Answer:

A. Exposure to an antigen

Explanation:

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