Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Microtubules visualized over time in a beating cardiac muscle cell expressing green fluorescent protein-tubulin. Whenever the cell contracts, the microtubule (highlighted in red) buckles indicating that it resists contraction of the cytoskeletal actin network. Scale bar = 3 μm. Reproduced from reference 12 with permission form Brang-wynne et al.
