The different molecular tests allow the identification based on the comparison of organisms or parts of the components of a being based on the comparison with something already known, however to be able to say that this generates disease, multiple factors must be associated, and their action on it. internal environment that can cause damage or a change in balance modifying health. A conjunction of tests put against the clinical condition of the patient, however it cannot be properly asserted only by the result of the PCR.

• There really is a modification within the cell by introducing parts of some foreign agent that will modify the internal environment, and it will probably be a long time before knowing the consequences.