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Immune reactions could shut down CRISPR/Cas9 gene editing. This article combines what I learned in the Defense Unit with the Genetics Unit. A certain enzyme is used to slice DNA for gene editing, but in this study, 79% of people had antibodies against the enzyme. When the white blood cells of the immune system don't recognize proteins, they attack them, mounting an immune response.
Ancient hominid evolved upright stance without sacrificing climbing ability. We learned about fossil evidence in the Evolution Unit. Natural selection allows individuals with beneficial traits to survive and reproduce, leading to decent with modification, or change over time.
Mice infected with influenza had memory problems a month later, a result that hints at a link between infections and brain performance. This is related to the Defense Unit. We learned that Influenza is a virus, not a bacteria, so it cannot be treated with antibiotics. It also mutates very quickly, making immunization difficult.