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) M-mode echocardiography of WT, db/db, and db/db-BH4 groups. (B) Comparison of the ejection fraction before and after BH4 supplementation or vehicle treatment. (C) Comparison of fractional shortening before and after BH4 supplementation or vehicle treatment (each dot indicates a tested animal). *P < 0.05, db/db versus db/db-BH4.
