Multiple chemical sensitivity definition

The most commonly accepted definition of MCS was written by Mark Cullen, M.D., a professor of medicine and epidemiology at Yale University. In Workers With Multiple Chemical Sensitivities, Occupational Medicine 2 (1987) 655-626, he writes, Multiple chemical sensitivities is an acquired disorder characterized by recurrent symptoms, referable to multiple organ systems, occurring in response to demonstrable exposure to many chemically unrelated compounds at doses far below those established in the general population to cause harmful elfects. No single widely accepted test of physiologic function can be shown to correlate with symptoms. ... 

J. R. Nethercott et al., Multiple Chemical Sensitivities Syndrome Toward a Working Case Definition, Archives of Environmental Health 1993 48 19-26. www.ncbi.nlm.nih.gov/pub med/8452395 dop t=Abstrac t. 

Definition of MCS Case Definitions for Multiple Chemical Sensitivity... 

Nethercutt JR, Davidoff LL, Curbow B, et al. Multiple chemical sensitivities syndrome Toward a working case definition. Arch Environ Health 1993 48 19-26. 

Toxicology of Chemical Respiratory Hypersensitivity Table 3.4 Case definition of multiple chemical sensitivity ... 

Sparks PJ, Daniell W, Black DW, et al Multiple chemical sensitivity syndrome a clinical perspective, I case definition, theories of pathogenesis, and research needs. J Occup Med 36 718-730,1994a... 

Proceedings of the Association of Occupational and Environmental Clinics (AOEC) Workshop on Multiple Chemical Sensitivity. Toxicology and Environmental Health, Vol, 8, No. 4, July-August, 1992. (The definition for MCS is from the article by Ross on pg. 21. This book is the proceedings of a technical conference on MCS. This was a major reference source for technical material in this chapter. It should be contrasted with popular books whose message is very different.)... 

Owing to lanthanide contraction, niobium and tantalum have virtually identical atomic rad (1.47 A) and close ionization energies (Nb6.67, Ta7.3eV), and usually display very similt chemical behavior. Some definite differences can however be noted these can usually be trace to the lower sensitivity of tantalum to reduction and to its higher affinity for dioxygen. lb tantalum-element multiple bonds are usually stabler, while MfiXg arrangements are so ft known only for niobium. 

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