Download the BioNumbers database
To cite BioNumbers please refer to Milo et al. Nucl. Acids Res. (2010) 38 (suppl 1): D750-D753.

BioNumbers highlights: Collection of fundamental numbers in molecular biology

BioNumbers description handout: Short description of BioNumbers and a collection of interesting bioNumbers

Specialized BioNumbers collections: Handouts geared to specific communities. For example, a collection focusing on photosynthesis. Please suggest a subject for which you would like to have one.

BioNumbers in the news: Media coverage of BioNumbers

BioNumbers presentations Introduces the concept and some applications as well as a collection of slides with interesting BioNumbers

Handbooks of BioNumbers: useful book resources

Basic cell properties comparison table: An updated version of a table in Uri Alon's book Introduction to systems biology.

Quantitative biology problem sets: Aimed at courses teaching biology these questions make use of BioNumbers to develop quantitative reasoning about biological systems. For example: Putting absolute numbers on a sporulation model. Please contribute your ideas for good questions.

More details and future directions for BioNumbers can be found at
We welcome all suggestions to improving BioNumbers. Please send suggestions to

A neat demonstration: