Carcinogen a chemical capable of inducing cancer. Carcinoma – a malignant tumor (cancer). Cardiovascular – the heart and blood vessels. Carrier – a non-pesticidal substance added to a commercial pesticide formulation to make it easier to handle or apply. CAS registration number – an assigned number used to identify a chemical. CAS stands for Chemical Abstracts Service, an organization that indexes information published in Chemical Abstracts by the American Chemical Society and that provides index guides to help locate information about particular substances in the abstracts. Sequentially assigned CAS numbers identify specific chemicals. The numbers have no chemical significance. The CAS number is a concise, unique means of chemical identification. Categorical exclusion – a class of actions which either individually or cumulatively would not have a significant effect on the human environment and therefore would not require preparation of an environmental assessment or environmental impact statement under the National Environmental Policy Act (NEPA). Cation – positively charged ions in a solution. CBI herbicide – herbicide with phytotoxicity from inhibition of cellulose biosynthesis. Central nervous system (CNS) – the portion of the nervous system consisting of brain and spinal cord. Cellulose - an insoluble substance which is the main constituent of plant cell walls and of vegetable fibers such as cotton. It is a polysaccharide consisting of chains of glucose monomers. CERCLA – Comprehensive Environmental Response, Compensation, and Liability Act. The initial legislation authorizing Superfund passed by Congress in December, 1980. This law created a tax on the chemical and petroleum industries and provided broad Federal authority to respond directly to releases or threatened releases of hazardous substances that may endanger public health or the environment. Chlorophenoxy – a class of herbicides including 2,4-D (2,4-dichlorophenoxy acetic acid) and 2,4,5-TP (2,4,5-Trichlorophenoxy propionic acid).
Carcinogen. A substance that causes cancer. CERTIFIED LABORATORY: A laboratory that has demonstrated that it can meet the federal and state standards for accuracy and precision for a given analytical procedure.
Carcinogen. Lessee shall indemnify and hold lessor harmless from and against any and all claims, judgments, damages, penalties, fines, costs (including actual attorneys’ fees, litigation expenses and court costs), liabilities and losses, including without limitation, attorneys’ fees, consultant fees and expert fees which arise during or after the Lease term as a result of Hazardous Materials contamination and any clean up, remediation, removal or restoration work necessary in the reasonable judgment of Lessor or required by any federal, state or local governmental agency or political subdivision because of the presence of such Hazardous Materials in, on or about the Premises arising out of or relating to (a) the use, presence, handling or disposition of Hazardous Materials by Lessee, its employees, agents, contractors of invitees in, on or about the Premises, (b) the branch by Lessee, its employees, agents, contractors or invitees of any of the terms of this paragraph, and (c) any Hazardous Materials contamination of the Premises or the Building caused by Lessee, its employees, agents, contractors or invitees. Lessee’s obligations hereunder shall survive the termination of this Lease. Upon termination of this Lease, Lessee shall cause any and all Hazardous Materials stored on or about the Premises and any contamination caused by Lessee to be completely removed prior to Lessee’s vacating the Premises at Lessee’s expenses and in compliance with all applicable laws. Lessee shall be liable for any and all costs and expenses incurred by Lessor on Lessee’s behalf should Lessee fail to fulfill its obligations described in this paragraph.
Carcinogen. CHEM ROOM 1 100 ML BOTTLE ZINC CHLORIDE TOXIC/CORROSIVE CHEM ROOM 1 100G BOTTLE ZINC SULFATE IRRITANT CHEM ROOM 12 100G BOTTLE
Carcinogen. A causal agent that induces tumours. Carcinogens include external factors (chemicals, physical agents, viruses) and internal factors such as hormones. An important distinction can be drawn between genotoxic carcinogens which have been shown to damage DNA, and nongenotoxic carcinogens which act through other mechanisms. The activity of genotoxic carcinogens can often be predicted from their chemical structure - either of the parent compound or of active metabolites. Most chemical carcinogens exert their effects after prolonged exposure, show a dose-response relationship and tend to act on a limited range of susceptible target tissues. Carcinogens are sometimes species or sex-specific and the term should be qualified by the appropriate descriptive adjectives to aid clarity. Several different chemical and other carcinogens may interact, and constitutional factors (genetic susceptibility, hormonal status) may also contribute, emphasising the multifactorial nature of the carcinogenic process. Carcinoma: Malignant tumour arising from epithelial cells lining, for example, the alimentary, respiratory and urogenital tracts and from epidermis, also from solid viscera such as the liver, pancreas, kidneys and some endocrine glands. (See also 'tumour'). Case-control study: (Synonyms - case comparison study, case referent study) A comparison is made of the proportion of cases who have been exposed to a particular hazard (e.g. a carcinogen) with the proportion of controls who have been exposed to the hazard. Cell cycle (cell cycle arrest): The cell cycle is a series of events involving the growth, replication, and division of a eukaryotic cell. Cell cycle arrest: A regulatory process that halts progression through the cell cycle during one of the normal phases (G1, S, G2, M). Cell transformation: The process by which a normal cell acquires the capacity for neoplastic growth. Complete transformation occurs in several stages both in vitro and in vivo. One step which has been identified in vitro is 'immortalisation' by which a cell acquires the ability to divide indefinitely in culture. Such cells do not have the capacity to form tumours in animals but can be induced to do so by extended passage in vitro, by treatment with chemicals, or by transfection with oncogene DNA. The transformed phenotype so generated is usually, but not always, associated with the ability of the cells to grow in soft agar and to form tumours when transplanted into animals. It should be noted that e...
