We talk a lot about CRISPR and "designer babies" but the science of editing genes is varied and complex. This month, an adult man received billions of gene-editing viruses via an IV in an effort to treat a rare disease.

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Sources:
https://apnews.com/4ae98919b52e43d8a8960e0e260feb0a/AP-Exclusive:-US-scientists-try-1st-gene-editing-in-the-body
http://www.nature.com/news/crispr-gene-editing-tested-in-a-person-for-the-first-time-1.20988
https://ghr.nlm.nih.gov/condition/mucopolysaccharidosis-type-ii
http://www.sciencemag.org/news/2017/11/human-has-been-injected-gene-editing-tools-cure-his-disabling-disease-here-s-what-you
https://www.wired.com/2013/08/the-fall-and-rise-of-gene-therapy-2/
http://www.nbcnews.com/id/20730647/ns/health-health_care/t/womans-death-calls-gene-therapy-question/
http://learn.genetics.utah.edu/content/genetherapy/challenges/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3176093/
https://www.the-scientist.com/?articles.view/articleNo/49456/title/First-In-Vivo-Human-Genome-Editing-to-Be-Tested-in-New-Clinical-Trial/
https://academic.oup.com/nar/article/33/18/5978/2401349

Images
https://en.wikipedia.org/wiki/Zinc_finger_nuclease#/media/File:Repair_outcomes_of_a_genomic_double-strand_break_for_ZFN_cleavage.jpg
https://commons.wikimedia.org/wiki/File:Human_chromosome_X_from_Gene_Gateway_-_no_label.png
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