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Did you ever need to look up a number like the volume of a cell or the cellular concentration of ATP, only to find yourself spending much more time than you wanted on the Internet or flipping through textbooks—all without much success? Well, it didn’t happen only to you. It is often surprising how difficult it can be to find concrete biological numbers, even for properties that have been measured numerous times. To help solve this for one and all, BioNumbers (the database of key numbers in molecular biology) was created. Along with the numbers, you'll find the relevant references to the original literature, useful comments, and related numbers. Use textbox on the left to tell us numbers you are searching for and couldn’t find or any comments. Invitation to help BioNumbers with the most wanted numbers: Log in as a user and make entries of the values below, references are much appreciated. 1) Number of HLA (Human Leukocyte Antigen, MHC) molecules on an average human cell. 2) Mass of total protein in human cell. |