My beliefs on stem cell/embryo research and biotechnology are that the embryo is unaware, unthinking, and of no significance until it develops into several tissues, and actually starts to form a living organism, with several tissues. Whilst it still consists of a small amount of cells which feel absolutely nothing, and of no resemblance to a vertabrate life form, no harm will be done if it is used for medical research and then destroyed.
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Lalalalai.... I'll cut you up!