Green Cross Corporation (株式会社ミドリ十字; Kabushiki Gaisha Midori Jūji) was one of the premier pharmaceutical companies in Japan.
Green Cross was founded in 1950 as Japan's first commercial blood bank and became a diversified international pharmaceutical company producing ethical drugs for delivery or administration by doctors and healthcare workers.
Its founders included war criminals such as Masaji Kitano who performed torture and experiments on humans in the Japanese military's notorious Unit 731 during World War II.
Also serving as a consultant for the company was Murray Sanders, the American officer and physician who had petitioned for Kitano's acquittal after the war.
In the late 1980s, Green Cross and Takeshi Abe were at the center of a scandal in which up to 3,000 Japanese people contracted HIV through the distribution and use of blood products which were known to be unsafe.