| http://www.w3.org/ns/prov#value | - This Ab is the most potent neutralizing Ab isolated to date, featuring neutralizing activity against 75% of 36 primary isolates of HIV-1 tested at concentrations that could be achieved by passive immunization [73].To improve its affinity, the b12 Fab was submitted to CDR walking, a procedure involving randomization of its CDR and expression of the derived libraries expressed on phages, followed by
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