| ||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||
| Copyright © 2009. National Academy of Sciences. All rights reserved. Terms of Use and Privacy Statement |
Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text on the opening pages of each chapter.
Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
Do not use for reproduction, copying, pasting, or reading; exclusively for search engines.
OCR for page 173
APPENDIX 2
LeHer to AF!P
OCR for page 174
OCR for page 175
Appendix 17S
NATIONAL RESEARCH COUNCIL
I3OARD ON ENVIRONMENTAL STUDIES
AND TOXICOLOGY
2101 Co~lstittitio~l A`re~ll~t, Waslli~lytt,il, D.C. 20418
COM\lIT1 EE C)N' T(]XICOI OGY
Colonel John M. Pletcher
Department of Veterinary Pathology
Armed Forces Institute of Pathology
Washington, DC 20306-6000
Dear Col. Pletcher:
July 24, 1992
The National Research Council's Committee on Toxicology has organized the
Subcommittee on Risk Assessment of Ingested Fluoride. This study was requested by the U.S.
Environmental Protection Agency to determine if the current drinking water standard for fluoride
(4 mg/L) is appropriate.
At its second meeting on July 13, 1992, in Aspen, CO, the subcommittee recommended
the review of Procter and Gamble's mouse fluoride carcinogenicity study by the Armed Forces
Institute of Pathology (AFIP) for the following:
What is the proper terminology for these lesions?
Should the osteomas be considered neoplasms?
Is there a hyperostosis/osteoma continuum?
Do the osteomas have potential for malignant change?
Would these lesions regress if the stimulus were removed?
How often are bone neoplasms in animals multicentric?
Is there a human counterpart for these lesions?
Of those people involved, there is general knowledge of a contaminating
virus in this mouse study. What evidence is available to confirm it?
We have requested Procter and Gamble to submit mouse slides to AFIP for its
independent review. The final meeting of the subcommittee is scheduled for October 16, 1992, in
Washington, DC. Therefore, it would be helpful if you could review the slides as soon as possible
and have your report prior to the October 16 meeting.
Tl/i .\t,~ti`~n,71 RL'S{'/7/ t l/ Ct,nn~-il is flu I,/ in. i/,,71 t4','n7tin< /7g`'n~!/ Of tl/t .N',itit,nal .Ai ,7,1, A/!/ t,! St it nt ~ s ,7/u{ flu ,~,?tit,n,rl . l.-.7,z~ A/!/ (]f hngint ~ / ing
try se/ At gr7Z'r'/ n'ut'ut 0/u1 title/ t7/guni:atit,'/s. Tin- Bi,,7/,1 fin C//z~i/ t7/nut nti71 Stu`lit s ,7/ul Try rit t~li'V!/ ii n sl ~i,n5il~lt try tall- N/,7titinu1 Rt st,7/ i-l/ Ci7/n~-il tin t'ugl/ flu- Ct,/innissli,n
4~// 1.//r Stit //t-t s ,7//~1 tl/t Cti,/////iisi`~// If// Gi fist it 'rt ~ s. F//;'i/,',////t lit. `~//,1 Rt sti///-t ~ s.
TEI: (2()2) 334-26]6
I:AX: (2()2) 334-1393
OCR for page 176
176 Health Effects of Ingested Fluoride
We highly appreciate your willingness to review the mouse slides for us. With best
regards, I am,
Sincerely,
kin ~ F:~
Kulbir S. Bakshi, Ph.D.
Project Director
KSB/cmk
Representative terms from entire chapter:
ingested fluoride