Letter to the Editor

Arnold D.L. , Moodie C.A. , Charbonneau S.M. , Grice H.C. , McGuire P.F. , Bryce F.R. , Collins B.T. , Zawidzka Z.Z. , Krewski D.R. , Nera E.A. and Munro I.C. (1985). Long-term toxicity of hexachloro-benzene in the rat and the effect of dietary vitamin A. Fd. Chem. Toxic. 23:779–793.

Berger M.R. , Habs M. and Schmähl D. (1985). Comparitive carcinogenic activity of prednimustine, chlorambucil, prednisolone and chlorambucil plus pred-nisolone in Sprague-Dawley rats. Arch. Geschwulstforsch. 55:429–442.

Ciliberti A. , Maltoni C. and Perino G. (1988). Long-term carcinogenicity bioassays on propylene administered by inhalation to Sprague-Dawley rats and Swiss mice. Ann. N.Y. Acad. Sci. 534:235–245.

Clary J.J. , Til H.P. , Woutersen R.A. , Hollanders V.H.M. and Feron V.J. (1988). Chronic oral toxicity/carcinogenicity study of formaldehyde in rats. The Toxicologist 8:108 (abst. no. 428).

Conti B. , Maltoni C. , Perino G. and Ciliberti A. (1988). Long-term carcinogenicity bioassays on styrene administered by inhalation, ingestion and injec-tion and styrene oxide administered by ingestion in Sprague-Dawley rats, and para-methylstyrene administered by ingestion in Sprague-Dawley rats and Swiss mice. Ann. N.Y. Acad. Sci. 534:203–234.

Cotti G. , Maltoni C. and Lefemine G. (1988). Long-term carcinogenicity bioassay on vinylidene chloride administered by inhalation to Sprague-Dawley rats. Ann. N.Y. Sci. Acad. 534:160–168.

Feron V.J. (1986). New studies on formaldehyde in rats. In: Proceedings of the European Meeting of the Toxicology Forum, Geneva, Toxicology Forum Inc., Wash-ington, D.C.; p. 129–143.

Feron V.J. (1988). Recent inhalation and chronic oral studies with formaldehyde in rats. In: Transcript of the Toxicology Forum 1988 Annual Summer Meeting, Aspen, Toxicology Forum Inc., Washington, D.C.; p. 116–139.

Maltoni C. , Lefemine G. , Cotti G. and Perino G. (1988). Long-term carcinogenicity bioassays on trichloroethylene administered by inhalation to Sprague-Dawley rats and Swiss and B6C3F1 mice. Ann. N.Y. Acad. Sci. 534:316–342.

Maltoni C. , Ciliberti A. , Cotti G. , Conti B. and Belpoggi F. (1989). Benzene, an experimental multipotential carcinogen: results of the long-term bioas-says performed at the Bologna Institute of Oncology. Environm. Health Perspectives 82:109–124.

Nelson N. , Levine R.J. , Albert R.E. , Blair A.E. , Griesemer R.A. , Landrigan P.H.J. , Stayner L.T. and Swenberg J.A. (1986). Contri-bution of formaldehyde to respiratory cancer. Environm. Health Perspectives 70:23–35.

Soffritti M. , Maltoni C. , Maffei F. and Biagi R. (1989). Formaldehyde: an experimental multipotential carcinogen. Toxicol. Ind. Health 5:699–730.

Takahashi M. , Hasegawa R. , Furukawa F. , Toyoda K. , Sato H. and Hayashi Y. (1986). Effects of ethanol, potassium metabisulfite, formaldehyde and hydrogen peroxide on gastric carcinogenesis in rats after initiation with N-methyl-N-nitro-N-nitrosoguanidine. Jpn. J. Cancer Res. 77:118–124.

Til H.P. , Woutersen R.A. , Feron V.J. , Hollanders V.H.M. , Falke H.E. and Clary J.J. (1989). Two-year drinking-water study of formaldehyde in rats. Fd. Chem. Toxic. 27:77–87.

Tobe M. , Naito K. and Kurokaway Y. (1989). Chronic toxicity study on formaldehyde administered orally to rats. Toxicol. 56:79–86.

Universities Associated for Research and Education in Pathology, Inc. (1988). Epidemiology of chronic occupational exposure to for-maldehyde: Report of the Ad Hoc Panel on Health Aspects of Formaldehyde. Toxicol. Ind. Health 4:77–90.