On regeneron's website:
https://www.regeneron.com/sites/default/files/Regeneron-Position-Stem-Cell-Research.pdf
"Regeneron’s successful research and development work has always been predicated on a
deep understanding of basic biology. We conduct very early-stage research to better
understand human disease and discover important new treatment approaches. To keep
innovating, we must continue to learn more through responsible scientific exploration.
As is the case with many other science-focused biotechnology companies, Regeneron uses a
wide variety of research tools and technologies to help discover and develop new therapeutics.
Stem cells are one such tool. The stem cells most commonly used at Regeneron are mouse
embryonic stem cells and *****human blood stem cells*****. Currently, there are limited research efforts
employing human-induced pluripotent stem cell lines derived from adult human cells and
human embryonic stem cells that are approved for research use by the National Institutes of
Health and created solely through in vitro fertilization. Research using such stem cells allows
Regeneron to model complex diseases, test new drug candidates and can help unlock new
scientific insights that ultimately could lead to the discovery of new treatments for people with
serious diseases."
Get with the times.