Research has shown that all living cells of plants, animals and human beings emit biophotons – electromagnetic waves of light within biological systems, which cannot be seen by the naked eye but can be measured using special equipment. Healthy cells, sick cells, tumour cells, and infectious viruses and bacteria all have different light signals, which come together to form an internal system of cellular communication. A healthy cell radiates coherent light; whereas an unhealthy cell radiates chaotic light.