McKhann et al., 2011, Alzheimerâs & Dementia Possible AD â¢ Atypical course (e.g., sudden onset or no evidence of progressive decline) â¢ Etiologically mixed presentation â¢ Concomitant cerebrovascular disease (e.g., history of stroke temporally related to cognitive
Ellen Louise Ripley is a fictional character and the protagonist of the Alien film series played by American actress Sigourney Weaver.
Sigourney is well known for her role in the alien quadrilogy. (Spanning 1986-1997) Throughout the four movies, Sigourney has consistently played the character Ripley, the only one who understood the danger the aliens posed to the human race.