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, opsin distribution in the human ventricular model. Blue: opsin‐transfected tissue; black: tissue without opsins. B, Optrodes on the endocardial and epicardial surfaces in yellow. Three different optrode densities: a, 1.15 cm–2; b, 2.30 cm–2; and c, 4.61 cm–2.
