Cold Spring Harbor Laboratory has launched a preprint repository for the biological sciences called bioRxiv. bioRxiv is a place for scientists to deposit their unpublished manuscripts. This is similar to the preprint repository, arXiv, which has been in existence since 1991 and serves mainly researchers in physics, mathematics, and computer science.
About bioRxiv: http://biorxiv.org/about-biorxiv
Submission guidelines: http://biorxiv.org/submit-a-manuscript
