https://events.stanford.edu/events/830/83042/
https://www.wired.com/story/needle-carrying-pill-to-replace-injections-for-diabetes/
Designed after tapeworm hooks.
https://www.npr.org/sections/health-shots/2019/02/07/692331050/avoiding-the-ouch-scientists-working-on-ways-to-swap-the-needle-for-a-pill
