Ariunaa Sumiyadorj, Kazuhisa Murai, Tetsuro Shimakami, Kazuyuki Kuroki, Tomoki Nishikawa, Masaki Kakuya, Atsumu Yamada, Ying Wang, Atsuya Ishida, Takayoshi Shirasaki, Shotaro Kawase, Ying‐Yi Li, Hikari Okada, Kouki Nio, Kazunori Kawaguchi, Taro Yamashita, Yoshio Sakai, Davaadorj Duger, Eishiro Mizukoshi, Masao Honda, Shuichi Kaneko – 11 June 2022 – For the development of antiviral agents to eliminate hepatitis B virus (HBV), it is essential to establish an HBV cell culture system that can easily monitor HBV infection.