asked 203k views
3 votes
What leads to long-term immunity in mammals? A. Exposure to an antigen B. Action of an antibody C. Barriers

asked
User PhilE
by
7.7k points

1 Answer

2 votes
exposure to antigen as this input brings the total to five answers. y or n
answered
User Vinay Kolar
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8.3k points
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