- published: 27 Feb 2015
- views: 6424686
A vaccine is a biological preparation that improves immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism, and is often made from weakened or killed forms of the microbe, its toxins or one of its surface proteins. The agent stimulates the body's immune system to recognize the agent as foreign, destroy it, and "remember" it, so that the immune system can more easily recognize and destroy any of these microorganisms that it later encounters.
Vaccines can be prophylactic (example: to prevent or ameliorate the effects of a future infection by any natural or "wild" pathogen), or therapeutic (e.g. vaccines against cancer are also being investigated; see cancer vaccine).
The term vaccine derives from Edward Jenner's 1796 use of cow pox (Latin variola vaccinia, adapted from the Latin vaccīn-us, from vacca, cow), to inoculate humans, providing them protection against smallpox.
Vaccines do not guarantee complete protection from a disease. Sometimes, this is because the host's immune system simply does not respond adequately or at all. This may be due to a lowered immunity in general (diabetes, steroid use, HIV infection, age) or because the host's immune system does not have a B cell capable of generating antibodies to that antigen.
Robert De Niro (pronounced /dəˈnɪəroʊ/; born August 17, 1943) is an American actor, director and producer. His first major film roles were in Bang the Drum Slowly and Mean Streets, both in 1973. In 1974, he played the young Vito Corleone in The Godfather Part II, a role that won him the Academy Award for Best Supporting Actor.
His critically acclaimed, longtime collaborations with Martin Scorsese began with 1973's Mean Streets, and earned De Niro an Academy Award for Best Actor for his portrayal of Jake LaMotta in the 1980 film Raging Bull. He was also nominated for an Academy Award for his roles in Scorsese's Taxi Driver (1976) and Cape Fear (1991). In addition, he received nominations for his acting in Michael Cimino's The Deer Hunter (1978) and Penny Marshall's Awakenings (1990). Also in 1990, his portrayal as Jimmy Conway in Martin Scorsese's Goodfellas earned him a BAFTA nomination.
He has earned four nominations for the Golden Globe Award for Best Actor – Motion Picture Musical or Comedy: New York, New York (1977), Midnight Run (1988), Analyze This (1999) and Meet the Parents (2000). De Niro directed A Bronx Tale (1993) and The Good Shepherd (2006). He has received accolades for his esteemed career, including the AFI Life Achievement Award and the Golden Globe Cecil B. DeMille Award.
Actors: Bob Buchholz (actor), Christopher Roth (editor), Jack H. Harris (producer), Steve Pinto (actor), Steve Pinto (actor), Steve Pinto (writer), Steve Pinto (actor), Steve Pinto (actor), Steve Pinto (actor), Steve Pinto (actor), Steve Pinto (writer), Kent Skov (actor), Kent Skov (writer), Kent Skov (director), Kent Skov (writer),
Genres: Comedy, Horror, Sci-Fi,