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293T human embryonic kidney
The 293T cell line, originally known as 293tsA1609neo, is a derivative of the human embryonic kidney 293 cells that is highly effective for transfections. This cell line includes the SV40 T-antigen, making it capable of replicating vectors that contain the SV40 replication region. It is commonly used in the production of high-titer retroviruses and is extensively utilized for gene expression and protein production.