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After six months of training, German Shepherds dogs detect breast cancer accurately.
Dogs exhale five minutes in one second to pull, inhale and deliver aromas that are decoded by their 300 million receptor cells.
Breast cancer have special smell that dogs can detect, Jacky Experton trained German Shepherds Thor and Nykios to recognise cancerous and non -cancerous rags.
Dogs detected cancerous cells because they have more nerve cells than human, they also pick variety of chemicals.