Pratchett is known for a distinctive writing style that included a number of characteristic hallmarks. Metastasis is one of the hallmarks of cancer, distinguishing it from benign tumors. The film includes several examples of del Toro's most characteristic hallmarks. Drummer Magazine labels them a "few distinctive hallmarks [that] help characterize Ronnie's style". This requires abstract thought, one of the hallmarks of modern human behavior. Rodin saw suffering and conflict as hallmarks of modern art. Those characteristics would become the hallmarks of Speed Metal. Therefore, heterogenous cell growth and pleomorphism is one of the earliest hallmarks of cancer progression. One of the hallmarks of Gandharan art is its relation to naturalism of Hellenistic art. Stark investigates the remains of a local explosion bearing the hallmarks of a Mandarin attack. The series also established many of the hallmarks of the BBC's natural history output. It is one of the classic hallmarks of tornado-producing supercells. This dish is one of the hallmarks of Pakistani cuisine. Decreased expression of ChAT is one of the hallmarks of Alzheimer's disease. Mutation ultimately leads to acquisition of the ten hallmarks of cancer.