his research aims to clarify the concept of stem cells in language and terminology, the concept of redundant projected embryos in language and terminology, how to obtain stem cells from their sources, what types they are, elements of redundant projected aborted embryos as a source of stem cells, the scientific application of stem cells, and their applications through the contemporary medical model, the use of projected aborted embryos for scientific research, medical experiments, and a statement of doctrinal adaptation to that contemporary issue, noting the results of the research.