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Session 76-Poster Abstracts Coordinated Immune Responses Tuesday, 2-4 pm; Poster Hall       381 Development of IgG Mediated Antibody Dependent Cell-mediated Cytotoxicity (ADCC) in the Genital Mucosa of HIV Seroconverters Mariam Aziz*1,2, F Mahmood2, H Durkin3, C Liu4, R Greenblatt5, M Nowicki6, E Golub7, K Anastos8, A French1,2, and L Baum2 1Cook County Hlth and Hosp System, Chicago, IL, US; 2Rush Univ Med Ctr, Chicago, IL, US; 3State Univ of New York Downstate Med Ctr, Brooklyn, US; 4Georgetown Univ, Washington, DC, US; 5Univ of California, San Francisco, US; 6Univ of Southern California, Norris Hosp, Los Angeles, US; 7Johns Hopkins Univ, Baltimore, MD, US; and 8Montefiore Med Ctr, Bronx, NY, US       382 gd T Cells in HIV Infection Nathalia Holt*1, S Wilton1, E Byrne1, A Konisky1, W Gostic1, A Piechocka-Trocha1, B Walker1,2, and D Kwon1 1Ragon Inst of MGH, MIT, and Harvard, Boston, MA, US and 2Howard Hughes Med Inst, Chevy Chase, MD, US       383 Hepatitis B Virus Vaccine Response Is Inversely Related to the Duration of Untreated HIV Infection Michael Landrum*1,2, J Okulicz2, A Ganesan1,3, G Wortmann3, and B Agan1 1Uniformed Svcs Univ of the Hlth Sci, Bethesda, MD, US; 2San Antonio Military Med Ctr, Fort Sam Houston, TX, US; and 3Walter Reed Natl Military Med Ctr, Bethesda, MD, US       384 Peripheral Blood T Follicular Helper Cell Expansion Is Required for Stimulating Antibody Responses to 2009 H1N1 Vaccine in HIV+ Persons S Silva, Suresh Pallikkuth*, A Parmigiani, S Pilakka-Kanthikeel, M Fischl, R Pahwa, and S Pahwa Univ of Miami Miller Sch of Med, FL, US       385 KIR2DS4 Expression Alters NK Cell Responses during HIV-1 Infection A Merino1, A-S Dugast2, C Wilson1, P Goepfert1, G Alter2, J Tang1, and Richard Kaslow*1 1Univ of Alabama at Birmingham, US and 2Ragon Inst of MGH, MIT, and Harvard, Boston, MA, US       386 Impact of Protective KIR and HLA Alleles on NK and T Cell Function in HIV-1+ Elite and Viremic Contollers Costin Tomescu*1, F-M Duh2, R Hoh3, A Viviani3, K Harvill3, M Martin2, M Carrington2, S Deeks3, and L Montaner1 1The Wistar Inst, Philadelphia, PA, US; 2NCI-Frederick, MD, US; and 3Univ of California, San Francisco, US       387 Viral Adaptation against KIR2D-associated gag Immune Pressure and Their Effect on Clinical Outcome among HIV-1 CRF01_AE-infected Thais Masahiko Mori*1,2,3, N Wichukchinda4, R Miyahara1, M Yasunami1, and K Ariyoshi1 1Inst of Tropical Med, Nagasaki Univ, Japan; 2Japan Fndn for AIDS Prevention, Tokyo; 3Univ of Oxford, UK; and 4Ministry of Publ Hlth, Nonthaburi, Thailand       388 Loss of CD4+ T Cells May Impair Anti-fibrotic Activity of NK Cells in HIV/HCV Co-infection Andreas Glässner*, M Eisenhardt, B Krämer, F Wolter, P Kokordelis, B Sibbing, T Sauerbruch, J Rockstroh, U Spengler, and J Nattermann Univ of Bonn, Germany