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Há 5 dias · 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]
Há 20 horas · Some dictionaries suggest a derivation from Welsh pen, 'head' and gwyn, 'white', including the Oxford English Dictionary, the American Heritage Dictionary, the Century Dictionary and Merriam-Webster, on the basis that the name was originally applied to the great auk, either because it was found on White Head Island (Welsh: Pen Gwyn) in Newfoundland, or because it had white circles around its ...
Há 1 dia · It was devised by the International Phonetic Association in the late 19th century as a standardized representation of speech sounds in written form. [1] The IPA is used by lexicographers, foreign language students and teachers, linguists, speech–language pathologists, singers, actors, constructed language creators, and translators.
Há 1 dia · In mammals, the vulva ( pl.: vulvas or vulvae) consists of the external female genitalia. The human vulva includes the mons pubis, labia majora, labia minora, clitoris, vulval vestibule, urinary meatus, vaginal opening, hymen, and Bartholin's and Skene's vestibular glands. The vulva includes the entrance to the vagina, which leads to the uterus ...
Há 2 dias · Martin Luther OSA ( / ˈluːθər /; [1] German: [ˈmaʁtiːn ˈlʊtɐ] ⓘ; 10 November 1483 [2] – 18 February 1546) was a German priest, theologian, author, hymnwriter, professor, and Augustinian friar. [3] Luther was the seminal figure of the Protestant Reformation, and his theological beliefs form the basis of Lutheranism.
Há 4 dias · Other Latin American nations have expressed interest in joining the group. Mercosur's purpose is to promote free trade and the fluid movement of goods, people, and currency. Since its foundation, Mercosur's functions have been updated and amended many times; it currently confines itself to a customs union , in which there is free intra-zone trade and a common trade policy between member countries.
Há 5 dias · The cheetah ( Acinonyx jubatus) is a large cat and the fastest land animal. It has a tawny to creamy white or pale buff fur that is marked with evenly spaced, solid black spots. The head is small and rounded, with a short snout and black tear-like facial streaks.
