This is disinformation. Many areas of biology, including vaccine development, use embryonic stem cells for testing. Such use of these cells is ubiquitous in biology.

Some of the cells may come from early term abortions. Perhaps we need to visit the chain of custody of these cells. However, using cells for testing, and putting them into the vaccines (or treatments, or whatever) themselves are completely different things.

I can pretty much guarantee that nearly every medication you or anyone has ever taken was tested on embryonic stem cells at some point in their development.

If you have actual evidence (real science) that supports the statement that human cells are an ingredient in the J&J vaccine (or anything else for that matter) I will be happy to look at it. Otherwise, please stop spreading disinformation.