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 public debate between conservative ethicist Wesley J. Smith and bioethicist Jacob M. Appel. In discussing "Baxter v. Montana", Appel has written: Smith replies that this is "taking the duty to die and transforming it into a duty to kill", which he argues "reflects a profound misunderstanding of the government’s role". Presumably, if a person has positive rights it implies that other people have positive duties (to take certain actions); whereas negative rights imply that others have negative duties (to avoid certain other actions). Philosopher Henry Shue is skeptical; he believes that all rights (regardless of whether they seem more "negative"