Journals which specialize in review articles:
PubMed The only way to search the scientific literature. If you are confused, take a look at the PubMed Tutorial.
Nature Reviews Focus on
RNAi includes two useful animations
Expasy One of the best sites for analyzing protein sequence.
The Protein Databank For finding and viewing actual 3D protein structures.
Ergito This site has a great section on Classic Experiments that is written by the people who actually did the experiments, along with some very useful images. Free registration is required.
Free On-Line Textbooks from NCBI. Fully searchable. Especially useful texts include Molecular Cell Biology by Lodish et al. Introduction to Genetic Analysis by Griffith et al. and Molecular Biology of the Cell by Alberts et al.
Interactive Biochemistry Lots of interesting stuff here. Great animations of Na+/K+ ATPase, electron transport and other things. Wonderful reviews of a variety of current topics, such as HIV, "Mad Cow" Disease, and Cloning Mammals. One of the better sites I've seen.
Online Mendelain
Inheritance in Man An amazing database of over 10,000 human
genes and human diseases. Lots of information, much of it
easy-to-read, some of it is highly technical. Lots of links to
the primary scientific literature.
Committee
on Publication Ethics
Office of Research
Integrity at the National Institutes of Health
Guide for the
Care and Use of Laboratory Animals
Declaration of
Helsinki governing human research