Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
Four years ago, the NIH’s Brain Research through Advancing Innovative Neurotechnologies (BRAIN) Initiative Cell Census Network (BICCN) was launched, aiming to identify and catalog the diverse cells types in human, monkey and mouse brain.
Interspecies communication in complex microbiome environments occurs through the small molecules, peptides, and proteins produced by both the host and the microbial residents, as highlighted in this collection of recent articles from Nature Portfolio.