Reference Tools
British Medical Journal (abstracts only)
Center for the Evaluation of Risks to Human Reproduction
The Merck Manual of Medical Information—Home Edition
National Association for Biomedical Research
National Human Genome Research Institute (NHGRI/NIH) -- Glossary of Genetic Terms
National Institute of Environmental Health Sciences
Nature (abstracts only)
The New England Journal of Medicine (abstracts only)
NIOSH Online Version of Chemical Hazards
Occupational Safety & Health Administration (OSHA)
Organization of Teratology Information Services (OTIS)