Mitsubishi Kasei Corporation

Michiru Kamizono

Kazuhiro Takahashi

Yutaka Teranishi

Naomi Kitamura

Shigetada Nakanishi

Rie Matsui

Tatsurou Shibui

Provided herein are a DNA fragment which contains a base sequence coding for a non-A non-B hepatitis-specific antigenic protein occurring in cells of the liver affected with non-A non-B hepatitis, an expression vector in which said DNA fragment is inserted into a cloning site present downstream from a promoter thereof, a transformant obtained by introducing said expression vector into a host, and a process for producing said antigenic protein which comprises providing said expression vector, transforming a host with said expression vector, culturing the transforming host and collecting the protein produced therein.

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Machida, Japan

Michiru Kamizono