Cells as part of a biological organism are accustomed to obeying orders. Hormones and nerve impulses are part of the general chain of command, biophotons and consciousness are part of the particular chain. We encounter consciousness as a control command for biological processes, for example in NLP (Neuro-Linguistic Programming), in spiritual healing, in remote healing, in the incantation of warts or also in the strategy of imagining one's blood as a soldier and sending it to the place where, for example, a tumor is to be treated (Simonton method).
Since this biocommunication largely takes place outside the realm we can perceive with our five senses or measure with physical measuring devices, its effect is often mistrusted. More recently, however, traditional medicine has also been getting interested in the subject, under the general title of psychoneuro-immunology.
However, biocommunication can not only inform individual cells but also complete organisms (telepathy):