This subchapter does not restrict the funding of areas of scientific research not specifically prohibited by this subchapter, including without limitation:
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(1) In vitro fertilization and accompanying embryo transfer to the body of a woman;
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(2) Administration of fertility-enhancing drugs;
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(3) Research in the use of nuclear transfer or other cloning techniques to produce molecules, deoxyribonucleic acid, cells other than human embryos, tissues, organs, plants, or animals other than humans; and
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(4) Any diagnostic procedure that benefits the human embryo subject to destructive tests while not imposing risks greater than those considered acceptable for other human research subjects.