The health ministry inspected the premises of a major manufacturer of blood products and vaccines Thursday, a day after an investigative panel accused it of using unauthorized additives and of falsifying records.
The ministry's action suggests that Chemo-Sero-Therapeutic Research Institute, or Kaketsuken, may yet be subject to punitive measures by the government.
The third-party panel, set up by the institute after allegations of misconduct surfaced in May, found the use of unauthorized additives and data manipulation stretching back over roughly 40 years.