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.
Variation of cell population fraction exhibiting calcein transport (T) with broadband energy density, Ebb, at four frequencies (♦, 20 kHz; ▴, 57 kHz; □, 76 kHz; and •, 93 kHz). Error bars show standard deviation on at least four repetitions.
