Dogs discover cancer in early phase !

The dogs have such refined sense of smell that they can smell cancer in its early phase in the human breath. The scientists trained 5 dogs to react on breath of the people ill with cancer. The dogs were to sniff samples of breath of 55 persons ill with lung cancer, 31 persons ill with breast cancer and 83 healthy persons. The dogs were 90% successful !

The scientists will now try to make electronic device for discovery of cancer on the basis of the breath, which would replace the dogs.