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.
Normal development and heartbeat analysis at st.34 in medaka embryos raised at 15°C. A: Days and developmental stage for embryos incubated at 15°C and 26°C. Solid circles, embryos raised at 26°C; solid triangles, embryos raised at 15°C. B and C: Time course of the strength of the contraction of the heartbeat measured at 26°C in st.34 embryos (plotted for 5 s). B: control. C: regurgitation.
