Plasma medicine Plasma medicine Plasma medicine is an emerging field that combines plasma physics, life sciences and clinical medicine. It is being studied in disinfection, healing, and cancer. Most of the research is in vitro and in animal models. It uses ionized gas (physical plasma) for medical uses or dental applications . Plasma, often called the fourth state of matter, is an ionized gas containing positive ions and negative ions or electrons, but is approximately charge neutral on the whole. The plasma sources used for plasma medicine are generally low temperature plasmas, and they generate ions, chemically reactive atoms and molecules, and
Negative and positive rights is "mistaken". He says that the question between what one has a right to do and who if anybody enforces it are separate issues. If rights are only negative then it simply means no one has a duty to enforce them, although individuals have a right to use any non-forcible means to gain the cooperation of others in protecting those rights. Therefore, he says "the distinction between negative and positive is quite robust." Libertarians hold that positive rights, which would include a right to be protected, do not exist until they are created by contract. However, those who hold this