some examples of both lowercase and capitalized stylings, including a few terms styled both ways, and says, "Authors and editors must decide for themselves, but whatever choice is made should be followed consistently throughout a work." When the eponym is used together with a noun, the common-noun part is not capitalized (unless it is part of a title or it is the first word in a sentence). For example, in Parkinson disease (named after James Parkinson), Parkinson is capitalized, but disease is not. In addition, the adjectival form, where one exists, is usually lowercased for medical terms (thus parkinsonian although Parkinson disease), and gram-negative, gram-positive although Gram stain. Uppercase Gram-positive or Gram-negative however are also commonly used in scientific journal articles and publications. In other fields, the eponym derivative is commonly capitalized, for example, Newtonian in physics, and Platonic in philosophy (however, use lowercase platonic when describing love). The capitalization is retained after a prefix and hyphen, e.g. non-Newtonian. For examples, see the comparison table below. Genitive versus attributive English can use either genitive case or attributive position to indicate the adjectival nature of the eponymous part of the term. (In other words, that part may be either possessive or non-possessive.) Thus Parkinson's disease and Parkinson disease are both acceptable. Medical dictionaries have been shifting toward nonpossessive styling in recent decades. Thus Parkinson disease is more likely to be used in the latest medical literature (especially in postprints) than Parkinson's disease. National varieties of English American and British English spelling differences may apply to eponyms. For example, British style would typically be caesarean section, which is also found in American medical publications, but cæsarean section (with a ligature) is sometimes seen in (mostly older) British writing, and cesarean is preferred by American dictionaries and some American medical works. Comparison table of eponym orthographic styling Lists of eponyms By person's name List of eponyms (A-K) List of eponyms (L-Z) By category Adages Adjectives Asteroids Astronomical objects Cartoon characters Chemical elements Colleges and universities Companies Diseases Foods Human anatomical parts Ideologies Inventions Mathematical theorems Medical signs Medical treatments Minerals Observations Places and political entities Prizes, awards and medals Scientific constants Scientific equations Scientific laws Scientific phenomena Scientific units Sports terms Surgical procedures Tests Trademarks or brand names See also Antonomasia Archetypal name Demonym Eponymous hairstyles Ethnonym Etymology Lists of etymologies False etymology Genericized trademark List of eponymous laws Medical eponyms Metonym Name