4K7F:
reference: The L60V variation in HBV core protein elicits new epitope-specific cytotoxic T lymphocytes and enhances viral replication., Zhang Y, Ren Y, Wu Y, Zhao B, Qiu L, Li X, Xu D, Liu J, Gao GF, Meng S, J Virol. 2013 May 15. PMID: 23678186

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