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2 de jul. de 2024 · Coronaviruses constitute the subfamily Orthocoronavirinae, in the family Coronaviridae, order Nidovirales and realm Riboviria. They are enveloped viruses with a positive-sense single-stranded RNA genome and a nucleocapsid of helical symmetry.
Hace 16 horas · A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. [1] . Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. [2] [3] Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity.
- LinearCircularSegmented
Hace 6 días · Respiratory syncytial virus ( RSV ), [a] also called human respiratory syncytial virus ( hRSV) and human orthopneumovirus, is a contagious virus that causes infections of the respiratory tract. It is a negative-sense, single-stranded RNA virus. [2] Its name is derived from the large cells known as syncytia that form when infected cells fuse.
Hace 2 días · 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]
Hace 4 días · Genocidio. Fosa común del campo de concentración de Bergen-Belsen tras su liberación en abril de 1945, en el marco del Holocausto. Para otros usos de este término, véase Genocidio (desambiguación). No debe confundirse con el crimen de lesa humanidad.
Hace 3 días · Le groupe est composé de neuf membres se prénommant Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung et Tzuyu. Le nom « Twice » a été choisi parce que les membres seront en mesure « d'épater leurs fans une première fois à travers leurs oreilles et une deuxième fois à travers leurs yeux. » 3 .
Hace 1 día · Russia, [b] or the Russian Federation, [c] is a country spanning Eastern Europe and North Asia. It is the largest country in the world by area, extending across eleven time zones and sharing land borders with fourteen countries. [d] It is the world's ninth-most populous country and Europe's most populous country.
