Informational site featuring biology news, organisms, newsletters and a search engine for biology.
http://www.biologybrowser.com/ 

An evolving online tribute to all ocean life, marine biology, and marine conservation. A nonprofit volunteer organization of marine biologists, students, professors, and conservation advocates.
One of the world's leading suppliers of high-performance kinase inhibitors and antibodies for cell signaling and oncology research.
http://www.selleckchem.com/ 

Informational source for biology essentials, topics and tools.
http://biology.about.com/ 
Source for biology of reproduction, including papers in press and mini reviews.
http://www.biolreprod.org/ 
Informational biology resource including, biology tutorials, dictionary of biology and the latest discussions.
http://www.biology-online.org/ 
Online source for cell and molecualr biology, including research communication and education.
Sorce for the analysis of protein sequences and structures, also including information on education and services.
Homepage for genome biology featuring comments, interaction and related articles.
http://genomebiology.com/ 
Online Journal of Biology providing issues, research, comments and news.