Actress Shannen Doherty has said her return to filming has helped her fight the "unimaginable beast" of cancer.
The Charmed star told how working on next year's TV remake of black comedy Heathers has given her new strength after her two-year cancer battle.
Her comments, shared in an Instagram post, were aimed at people who believe actors are "too weak".
Doherty (46), who posted a picture of herself wearing her iconic red scrunchie for the Paramount Network show, said: "Was back on set today. It's been a rough two years. Fighting cancer.
"As an actor, people bench you. They assume you're too weak, not able, and yet it's something like work that invigorates and renews strength to conquer the unimaginable beast.
"I compared myself to a car today. That vintage Shelby that's been in the garage too long. It's still a great car. The best. Just needs time for the engine to warm up and it's good to go. Performing like it's supposed to.
"I'm grateful for today. Grateful for everyday. Thank you @heathers for letting me play and be someone else today."
Best known for playing witch sister Prue Halliwell in hit US show Charmed, Doherty played Heather Duke alongside Winona Rider and Christian Slater in the original 1988 Heathers film.
The Memphis-born actress has since been a familiar face on TV screens, with roles in series such as North Shore and Beverly Hills, 90210.
Doherty has spoken openly about her cancer battle, sharing pictures and posts on social media as she underwent treatment.
She even shared a video clip of herself "laughing thru tears" as she shaved her head after chemotherapy.
She regularly pays tribute to her husband Kurt Iswarienko for his support after their marriage in 2011.