As Trump hails Regeneron treatment, his administration tries to block the science it used - CNN

...While Regeneron did not directly use human fetal cells to make the monoclonal antibody treatment given to Trump, it did use cells derived from an abortion in the Netherlands back in 1972 to make the targets for its antibodies -- the mimics of the coronavirus' spike protein...

https://www.cnn.com/2020/10/08/health/trump-antibody-cells-abortion-policy/index.html