
Michael Knowles @michaeljknowles
"Cardiac" and "heart" are synonyms, as are "fetus" and "embryo." https://t.co/Q5x7W33SF2 — PolitiTweet.org
Carrie Ghose @cghoseBiz1st
Reporters and editors: It is not a "fetal heartbeat." At 6 weeks it is cardiac activity (no organ has formed) in an embryo.