Additional Source #4 – Article
“[T]he immediate product of sexual human reproduction is a new living genetically unique single-cell human organism, human being, human embryo, human zygote, human individual”4
4Irving, D.N., What Human Embryo?: Funniest Mental Gymnastics from Medicine and Research, Catholic Culture, https://www.catholicculture.org/culture/library/view.cfm?recnum=6373.