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3 days ago · Visna-maedi virus. The human immunodeficiency viruses ( HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), [1] [2] a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. [3]
1 day ago · The following is a list of clubs who have played in the Premier League since its formation in 1993 to the 2024–25 season.. Over that span, 51 teams have played in the Premier League, two of which (Cardiff City and Swansea City) are located in Wales; they play in the English football league system for practical and historical reasons.
2 days ago · Wrexham Association Football Club ( Welsh: Clwb Pêl-droed Wrecsam [2]) is a professional association football club based in Wrexham, Wales. Formed in 1864, [3] it is the oldest club in Wales and the third-oldest professional association football team in the world. [4] They compete in EFL League Two, the fourth level of the English football ...
1 day ago · List of cities in the United Kingdom. Examples of major urban areas in the United Kingdom; Liverpool, Edinburgh, Newcastle upon Tyne; and London. This is a list of cities in the United Kingdom that are officially designated such as of 12 November 2022. [1] [2] It lists those places that have been granted city status by letters patent or royal ...
2 days ago · A vaccine is a biological preparation that provides active acquired immunity to a particular infectious or malignant disease. [1] [2] The safety and effectiveness of vaccines has been widely studied and verified. [3] [4] A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or ...
2 days ago · A hippie, also spelled hippy, [1] especially in British English, [2] is someone associated with the counterculture of the 1960s, originally a youth movement that began in the United States during or around 1964 and spread to different countries around the world. [3]
1 day ago · Social media. Social media are interactive technologies that facilitate the creation, sharing and aggregation of content, ideas, interests, and other forms of expression through virtual communities and networks. [1] [2] Although not unchallenged, [3] [4] common features include: [2] Online platforms that enable users to create and share content ...
