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NTP to Review Draft Technical Reports: Correction Notice

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[Federal Register: January 5, 2004 (Vol. 69, No. 2)]
[Notices]
[Page 373]


DEPARTMENT OF HEALTH AND HUMAN SERVICES

PUBLIC HEALTH SERVICE

National Toxicology Program (NTP)

National Toxicology Program (NTP) Board of Scientific Counselors Technical Reports Review Subcommittee Meeting; Review of Draft NTP Technical Reports; CORRECTION

The table included in the Federal Register notice (68 FR, No. 232 pp. 67696-67697) published December 3, 2003, had errors in the information provided in the column headed Route & Exposure Levels for 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), 3,3',4,4',5-Pentachlorobiphenyl (PCB 126), 2,3,4,7,8-Pentachlorodibenzo-furan (PeCDF) and the Mixture of PCB 126, TCDD, and PeCDF. The corrected information is provided below.

Chemical/
CAS Number

Report
Number

Route & Exposure Levels

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) /1746-01-6

TR-521

Two-year study; administered by gavage at 3-100 ng/kg to female Sprague-Dawley rats

3,3',4,4',5-Pentachlorobiphenyl (PCB 126) /57465-28-8

TR-520

Two-year study; administered by gavage at 30-1000 ng/kg to female Sprague-Dawley rats

2,3,4,7,8-Pentachlorodibenzo-furan (PeCDF) /57117-31-4

TR-525

Two-year study; administered by gavage at 6-200 ng/kg to female Sprague-Dawley rats

Mixture of PCB 126, TCDD, and PeCDF

TR-526

Two-year study; administered by gavage at 10-100 ng TCDD "equivalents"/kg to female Sprague-Dawley

Dated: December 19, 2003

Samuel Wilson, M.D.
Deputy Director
National Toxicology Program

[Billing Code 4140-01-P]