(CBS SF/AP) — The cast of CBS’s hit comedy show “The Big Bang Theory” has filmed a public service announcement to raise awareness about skin cancer after learning of the death of a young Maryland fan.

The Baltimore Sun reports that the video features the cast reminding young fans to have their skin checked by a dermatologist for melanoma.

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The cast filmed the spot after learning about 17-year-old Claire M. Wagonhurst, a Baltimore County high school student who died from adolescent melanoma in October 2014.

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Wagonhurst’s mother, Marianne Banister, a former WBAL-TV news anchor, says her daughter frequently watched “The Big Bang Theory” as the melanoma progressed and her vision declined.

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