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About CLEA Japan, Inc.
About CLEA Japan, Inc.
Total System Supplier of Experimental Animals

Bioscience is a key for human health in these days. CLEA Japan, Inc. is the first company to mass-produce Specific Pathogen Free (SPF) mice and rats, and has been supplying them to many bioscience related companies and research institutes. We are a total system supplier of experimental animals, their diets and equipments, to support bioscience research and development with a vision of health, welfare, and environment for human. We are also offering a broad area of contract researches using our highest quality experimental animals and equipments.

Where did our name come from?
The name of CLEA Japan, Inc. is originated from the acronym of our parent organization, Central Laboratory for Experimental Animals (now, Central Institute for Experimental Animals - CIEA).

Jcl* Animal Model - in vivo Assay System -

Jcl brand, you can trust with confidence
Our commitment is to provide the highest quality experimental animals as “ in vivo Assay System” with comprehensive animal care services to bioscience community for supporting bioscience research and preclinical study.  (*Jcl is a Lab Code of CLEA Japan, Inc.)

Key Commitments
  • Highest level of quality control(ISO 9001 certified: November 2003)
    • Genetic Control
    • Microbiological Control
    • Environmental Control
    • Nutritional Control
  • Independent animal production lot with a dedicated management system
  • Managing system for founder animals of in-house foundation colonies
  • Safe transportation system
  • Strict internal regulation on animal welfare
"Barrier System", a small and dedicated unit production system with the highest safety
  • Production is well controlled in each unit independently by a responsible team.
  • Only minimum intervention is necessary and proper environment can be maintained if transfer of animals is required by any means.
  • In case of infectious accident, it can be controlled easily with minimum contamination.
In 1952, Central Institute for Experimental Animals (CIEA), our parent organization, started to develop superior experimental animals (mice and rats), which were essential in medical and pharmaceutical research. These animals have been well controlled genetically, nutritiously, and microbiologically, with extreme care. In 1957, CIEA became a juridical foundation at the request of the Ministry of Education (Japan) and expanded its function. In 1965, CLEA Japan, Inc. became an independent company to produce SPF animals with its comprehensive experiences and technologies about experimental animals.
Company Overview
Foundation Date: February 26, 1965

170 million Japanese yen


Central Institute for Experimental Animals (CIEA), 15 pharmaceutical companies and others

Employees: 318
Affiliated organization: CIEA, JAC Inc.
Locations: Head Office (Tokyo)
Tokyo Animal & Diet Dept.
Osaka Animal & Diet Dept.
Tokyo Cage & Equipment Dept.
Osaka Cage & Equipment Dept.
Sapporo Branch Office
Sendai Branch Office
Technical Service Dept (Fujinomiya-shi, Shizuoka)
- Nogawa Branch Office, TSD (Kawasaki-shi, Kanagawa)
- Contract Service Marketing Section, TSD (Tokyo)
Marmoset Breeding Facility (Yaotsu-cho, Kamo-gun, Gifu)
Ishibe Breeding facility (Konan-shi, Shiga)
Fuji Breeding facility (Fujinomiya-shi, Shizuoka)
Fujiyama Breeding Facility (Fujinomiya-shi, Shizuoka)
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