An injection into the spinal canal to deliver substances to the cerebrospinal fluid.

Why this matters

Used for stem cell therapies targeting neurodegenerative diseases like ALS, multiple sclerosis, and spinal cord injuries.

LINK: https://en.wikipedia.org/wiki/Intrathecal_administration#:~:text=Intrathecal%20administration%20is%20a%20route,the%20cerebrospinal%20fluid%20(CSF).