What they are saying (basically) is that CBD flips a switch in corrupt liver cells that are producing scaring, or fibrosis. A switch that tells the cell(s) to commit suicide. From the brief abstract the mechanism appears to be very similar to the way CBD (and THC) tell cancer cells to die.
Isn’t it ironic that folks who’ve been breeding plants for recreational use have been doing their best to eliminate the CBD in the plants. As you know, Cannabidiol counteracts the psychoactive effects of THC.
‘Course, recreational use and medicinal are two birds of a different feather. Still, Cannabidiol is turning out to be one Hell of a bad cell bonker (Hey! I just got done reading about an award for terrible writing. Get off me, man!).
Here’s a link to the abstract (on PubMed, no less) should you care to peruse it yourself.