<prompt> Nude mice is able to accept xenograft because they lack:T cellsB cellsNK cellsLAK cells  <response>: Ref. Textbook of Microbiology and Immunology BY Parija. Page. 162 Nude MiceCongenitally athymic nude mice nunu are presented as a model for the study of cell-mediated immunologic deficiencies.These mice possess a vestigial thymus which is incapable of producing mature T-cells as shown by a decreased lymphocyte population carrying the theta antigen and depleted thymus-dependent areas in their peripheral lymphoid organs.They have T-cell precursors in their bone marrow. Nude mice lack thymosin, a thymic factor secreted by the epithelial cells of the thymus.They also have impaired T-cell functions as demonstrated by an absence of delayed hypersensitivity reactions, an inability to reject skin allografts and a decreased antibody response to some T-dependent antigens 