Process for producing foreign protein

摘要

A process for efficiently producing a foreign protein, in particular, a novel foreign protein suitable for the expression of a recombinant antibody with eucaryotic cells by the genetic recombination techniques, wherein a cell containing a foreign gene introduced thereinto can be cultured in a serum-free medium by using as a host cell for foreign gene expression a fused cell obtained by the fusion of mouse myeloma with a lymphoid cell and culturable in a serum-free medium.