KEGG Metabolic Pathways, Graphical pathway maps and ortholog group tables
http://www.genome.ad.jp/kegg/metabolism.html
Extensive linked guide to metabolic pathways.
Biochemistry in the Biology Project
http://www.biology.arizona.edu/biochemistry/biochemistry.html
Tutorials on basic biochemistry and energy metabolism.
National PKU News
http://www.pkunews.org/
News and information about phenylketonuria.
Cancer chemotherapy
http://www.nlm.nih.gov/medlineplus/cancerchemotherapy.html
Overview of chemotherapy, with links for patients and physicians.
Enzyme classification
http://ca.expasy.org/enzyme/
How enzymes are named and links to each one.
