Is it true that the flesh of murdered babies (embryonic stem cells) was used during the research for this vaccine?
"Eschew flamebait. Don't introduce flamewar topics unless you have something genuinely new to say."
"Comments should get more thoughtful and substantive, not less, as a topic gets more divisive."
"Flesh of murdered babies" is an extreme violation of these rules. The internet is flammable and we ban accounts that blow threads up in this way, so please don't do it again.
But anyhow, to answer your question despite the terrible way it was asked, no, the Moderna vaccine did not use embryonic stem cells in its development or production. Some partners, such as NIAID, did use embryonic stem cells for in-vitro testing of the vaccine: http://phillycatholiclife.org/life-affirming-choices-3/covid..., but the Catholic church does not consider that to make the Moderna vaccine unethical, as it's its direct development and production have never involved the use of embryonic stem cells.