U.S. Department of Health and Human Services, "Draft National Institutes of Health Guidelines for Research Involving Human Pluripotent Stem Cells (December 1999)," www.nih.gov/news/stemcell/draftguidelines.htm. The American Association for the Advancement of Science supports both public and private funding for stem cell research derived from all sources; yet the AAAS recognizes that many religious traditions that take a developmentalist view of personhood will be at odds with those opposing use of embryos for anything other than pregnancy. Despite such unsettled religious differences, says the AAAS, these concerns need not exclude publicly-funded research activities on cell lines that have already been established. See: Audrey R.Chapman, Mark S. Frankel, and Michele S. Garfinkel, Stem Cell Research and Applications (November 1999). http://www.aaas.org/spp/dspp/sfrl/projects/stem/main.htm.