Related Experiment Video
Updated: May 5, 2026

Establishment of Epstein-Barr Virus Growth-transformed Lymphoblastoid Cell Lines
Published on: November 8, 2011
Epstein-Barr virus superinduces a new human B cell differentiation antigen (B-LAST 1) expressed on transformed
We have developed a monoclonal antibody that detects the first human B-cell-specific differentiation antigen expressed on transformed B lymphoblasts. The antigen is termed B-LAST 1 and is found on B cells transformed in vitro with Epstein-Barr virus (EBV) and pokeweed mitogen; in vivo with EBV and antigen; and on neoplastic B cells from chronic lymphocytic leukemia and poorly differentiated lymphoma. The antigen has a molecular weight of 45,000 and was not found on cells of T, null or myeloid lineage, whether obtained from peripheral blood, lymph nodes, neoplasms or cell lines. The antigen is expressed at a much higher level on EBV-infected cells than on any other cell type studied, but does not appear to be virally encoded. The significance of this antigen in the process of viral and nonviral transformation and its possible role as a target for T-cell-mediated immunity against virus-infected cells is discussed.
We have developed a monoclonal antibody that detects the first human B-cell-specific differentiation antigen expressed on transformed B lymphoblasts. The antigen is termed B-LAST 1 and is found on B cells transformed in vitro with Epstein-Barr virus (EBV) and pokeweed mitogen; in vivo with EBV and antigen; and on neoplastic B cells from chronic lymphocytic leukemia and poorly differentiated lymphoma. The antigen has a molecular weight of 45,000 and was not found on cells of T, null or myeloid lineage, whether obtained from peripheral blood, lymph nodes, neoplasms or cell lines. The antigen is expressed at a much higher level on EBV-infected cells than on any other cell type studied, but does not appear to be virally encoded. The significance of this antigen in the process of viral and nonviral transformation and its possible role as a target for T-cell-mediated immunity against virus-infected cells is discussed.
Related Concept Videos
Hybridoma Technology
Hybridoma Selection
Commonly used fusion techniques — electroporation,...
Special Features of Adaptive Immunity
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Cells of the Adaptive Immune Response
Diversity of Antigen Receptors
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
B Cell Activation and Differentiation
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

