Reivindicaciones

1. A solution for the indefinite maintenance of nucleic acids in their cell of origin composed by the following reactive: • EDTA (Ethylen-diamine-tetraacetic acid) in a quantity which varies from 0.39 M and 0.56 M in its trisodium form (Na<3> ). • Sodium fluoride (NaF) at a molarity which varies from 0.33 M to 0.48 M. • Saturation of this solution with thymol (extracted fromThymus vulgaris L.) approximately 0.0001 M. • Its equilibration with ClH to pH = 8. 2. The solution for the indefinite maintenance of nucleic acids in the cell of origin thereof, according to claim 1, wherein the amount of EDTA in one litter solution varies between 140 gr. and 200 gr. 3. Solution for the indefinite maintenance of nucleic acids in the cell of origin thereof, according to claim 1, wherein the amount of NaF in one litter solution varies from 14 gr. and 20 gr. 4. Solution for the indefinite maintenance of nucleic acids in the cell of origin thereof according to claim 1, wherein the amount of thymol in one litter solution varies from 5 to 10 mg. 5. Solution for the indefinite maintenance of nucleic acids in the cell of origin thereof according to claim 1, wherein pH is equal to 8. 6. Solution for the indefinite maintenance of nucleic acids in the cell of origin thereof, according to the above claims, wherein when it is added to a biological sample obtained from an individual either eukaryote or prokaryote, this is maintained at a temperature equal or superior to +5°C and in such conditions that quality of the nucleic acids extracted later will not be affected, guaranteeing its integrity independently of the time elapsed between sample obtaining and nucleic acids extraction. 7. Solution for the indefinite maintenance of nucleic acids in the cell of origin thereof according to the above claims wherein the biological sample can be blood, an organ or fragment of it, a healthy tissue or not (tumour or inflammatory), skin, feather, bone marrow, egg, blood serum, amniotic liquid, semen, saliva, vaginal fluid, sweat, faeces, urine, hair or a cell culture. 8. Solution for the indefinite maintenance of nucleic acids in the cell of origin thereof, according to the above claims, wherein the solution can be an aqueous, solid or micronised.