Summary
I. Introduction: B cells, Antibodies and Antigens
the puzzle of low HIV spike density
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II. Affinity Maturation: Evolution in the Germinal Center 
III. Fitness & Evolution: Competition for virus capture 
dependence of potency on spike density
IV. Optimal density for synthetic nano-particle vaccination; increased competition in HIV

V. Broadly neutralizing Antibodies: Controlling affinity maturation against a mutable virus

vs. 
MIT Club of DC May 1, 2023
Assaf Amitai Shenshen Wang Arup K. Chakraborty
