Critical Tissue Concentration. The mean concentration in the organ (tissue) at the time the most sensitive type of cell reaches the critical concentration
The International Occupational Safety and Health Information Centre, Glossary of Terms On Chemical Safety, World Health Organization (WHO), The International Programme on Chemical Safety IPCS: Division of Environmental Health (A joint venture of the United Nations Environment Programme UNEP, the International Labour Organisation ILO, and the World Health Organization WHO), Geneva, Switzerland 2012. http://www.ilo.org/legacy/english/protection/safew ork/cis/products/safetytm/glossary.ht,(ChemSfty - Brit) {479}