4D9L:
reference: Functional and immunochemical cross-reactivity of V2-specific monoclonal antibodies from HIV-1-infected individuals., Gorny MK, Pan R, Williams C, Wang XH, Volsky B, O'Neal T, Spurrier B, Sampson JM, Li L, Seaman MS, Kong XP, Zolla-Pazner S, Virology. 2012 Mar 6. PMID: 22402248

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