Abstract: The subject matter disclosed herein is generally directed to epitopes that specifically bind to subject specific HLA class I molecules in MCC. The epitope identified is specific for MCC and is encoded for in the Merkel Cell Polyomavirus (MCPyV) large T antigen (MCPyV LT).

Abstract: The present invention relates, in part, to compositions and methods for modulating major histocompatibility complex (MHC) I expression on cancer cells.

Abstract: The present invention relates to methods for identifying Richter's transformation patients who benefit from PD-1 blockade.

Abstract: The present invention is based, at least in part, on methods to identify and quantify lineage-specific cells. The present invention provides methods of detecting lineage-specific cells in a biological sample, and monitoring the effectiveness of progenitor cell transfer in a subject. The invention further provides methods of determining an effective dose of progenitor cell transfer in a subject and methods of quantifying progenitor cell transfer in a subject. Additionally, methods are provided to identify allelic variants in lineage-specific cells.

Abstract: The present invention relates to the preparation of non-human animals having chimeric livers, whereby some or substantially all of the hepatocytes present are human hepatocytes. It is based, at least in part, on the discovery that rats, tolerized in utero against human hepatocytes, were found to serve as long-term hosts for human hepatocytes introduced post-natally, and the introduced hepatocytes maintained their differentiated phenotype, as evidenced by continued production of human albumin. The present invention further relates to the use of such animals as models of various liver diseases, including viral invention. Such embodiments are based on the discovery that transplanted human hepatocytes in chimeric livers were found to be susceptible to Hepatitis B virus and Hepatitis C virus infection.