• 

  Fred Garrett

  饰：Self - Henrietta Lacks' Cousin

• 

  Deborah Lacks Pullum

  饰：Self - Henrietta Lacks' Daughter

• 

  Roland Pattillo

  饰：Self,(as Dr Roland Pattillo)

• 

  Sadie Sturdivant

  饰：Self

• 

  George Gey

  饰：Self,(archive footage)

• 

  Mary Kubicek

  饰：Self - Laboratory Assistant

• 

  Walter Nelson-Rees

  饰：Self - Cell Biologist