If you click the link to the actual paper, you’ll find:
> Next, we sought to explore the potential benefit of targeting the age-related increase of FTL1 in the hippocampus of aged mice. We performed targeted stereotaxic injections of a high-titer virus encoding shRNA sequences targeting either Ftl1 or luciferase control into the CA1 and dentate gyrus hippocampal regions of aged mice (Fig. 3b and Extended Data Fig. 5a,b).
There are lots of bio research techniques that can be applied to mice that you wouldn’t necessarily want to do to yourself…
> Next, we sought to explore the potential benefit of targeting the age-related increase of FTL1 in the hippocampus of aged mice. We performed targeted stereotaxic injections of a high-titer virus encoding shRNA sequences targeting either Ftl1 or luciferase control into the CA1 and dentate gyrus hippocampal regions of aged mice (Fig. 3b and Extended Data Fig. 5a,b).
There are lots of bio research techniques that can be applied to mice that you wouldn’t necessarily want to do to yourself…