50 Years NIAID - Immunologic Diseases
Articles targeted at the general public on allergy and asthma, graft-vs-host diseases, immune deficiency diseases and autoimmune diseases. Also contains information on how the immune system works.
http://www.niaid.nih.gov/final/immds/immds.htm

List of Cotton Diseases
Catalog of diseases that affect this crop from Wikipedia, including bacterial, fungal, parasitic nematodes and viral diseases.
http://en.wikipedia.org/wiki/List_of_cotton_diseases

Nitric oixde website
Nitric oxide, Neuronal nitric oxide synthase , endothelium nitric oxide synthase, inducible nitric oxide synthase, human genome project, cancer, Alzheimer diseases, Parkinson's diseases, heart diseases
http://www.wxumac.demon.co.uk

Hardin MD - Microbiology and Infectious Diseases
From the University of Iowa, the *best* lists of Internet sources in microbiology and infectious disease, including bacterial infections.
http://www.lib.uiowa.edu/hardin/md/micro.html

Soybean Insects and Diseases
Photographs and information from Iowa State University on soybean insects, foliar injury and disease, stem and root diseases, seed and seedling diseases, soybean viruses and cyst nematodes.
http://extension.agron.iastate.edu/soybean/topicpage2.html

Common Names of Plant Diseases (listed by host)
Searchable database of the official names adopted for use by the American Phytopathological Society in its publications. Includes diseases caused by bacteria, fungi, nematodes, phytoplasmas, virus (and virus-like), and miscellaneous diseases/disorders.
http://www.apsnet.org/online/common/

Alfalfa Leaf Diseases
Photographs and information on a number of diseases that affect this crop.
http://www.ipm.iastate.edu/ipm/icm/1998/5-4-1998/alfdis98.html

Yam Diseases in Ghana
Outlines research into the nature and impact of diseases which may affect the yam crop.
http://www.bspp.org.uk/icpp98/4.7/1.html

Diseases of Rice
Information on 12 fungal diseases which may affect this crop, with photographs of some.
http://plantpathology.tamu.edu/Texlab/Grains/Rice/ricetop.html

Soybean Diseases
Soybean disease information on the Minnesota Soybean Production Website from the Univ. of Minnesota.
http://www.soybeans.umn.edu/crop/diseases/index.htm