Link here: http://www.ncbi.nlm.nih.gov/pubmed/1612580
Unfortunately, that abstract says nothing about the source of the adult or fetal tissues, and there is no link to the full article.
In the scientific world, “abort” means only the expulsion of the fetus from the mother’s body, without any indication as to how or why. It can be a perfectly natural pregnancy loss. If the research article says something about “medically” or “therapeutically” aborted, then the babies in that study were murdered. Otherwise, they most likely died naturally.