Oncogenesis is the process of formation of a malignant tumor. An oncogenic factor is considered to be the presence of altered cells (for example, viruses or radiation exposure) that can cause the transformation of ordinary somatic cells of the body into malignant ones. These altered cells - oncogenes - arise as a result of the process of mutation, or the acquired characteristic of the body to become cancerous (in the case of cancer, it is a hereditary characteristic).
Endogenous pheromones, as well as hormones of the hypothalamic-pituitary system, control the intensity of metabolic processes in tissues.
Glucocorticoids are endogenous regulators of metabolism in the body and act through a negative feedback mechanism. Steroids affect protein, fat and carbohydrate metabolism. In the blood, 2/3 of the substances are in a bound form, which is due to the formation of easily soluble complex compounds with albumin-transthyretin. Most of the cortisol stores are associated with blood serum. Free cortisol and cortisone bind to plasma transcortin.