NPR logo Sounds


Scientists report that they have recorded the vibrations created inside cells by cargo-carrying proteins moving along cellular railroad tracks called microtubules. NPR's David Kestenbaum reports from the cellular factory floor.



Please keep your community civil. All comments must follow the Community rules and terms of use, and will be moderated prior to posting. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.