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.
A particle (arrow) transfers from one MT (which is moving horizontally from right to left) to another (which is moving up). (A) Sequence from video recording captured every 3 s. Arrowheads show positions of the leading edge of the second MT. (B) Tracings of the positions of the MTs and the particle from the sequence shown in A. Bar, 10 μm.
