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Biologia (bakteria, wirus) (389)

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! EN_01200023_0001 SCI
Coloured transmission electron micrograph (TEM) of Zika virus particles (yellow). Zika is an RNA (ribonucleic acid) virus from the Flaviviridae family. It is transmitted to humans via the bite of an infected Aedes sp. mosquito. It causes zika fever, a mild disease with symptoms including rash, joint pain and conjunctivitis. In 2015 a previously unknown connection between Zika infection in pregnant women and microcephaly (small head) in newborns was reported. This can cause miscarriage or death soon after birth, or lead to developmental delays and disorders. Magnification: x160,000 when printed at 10 centimetres wide.
! EN_01200023_0002 SCI
Coloured transmission electron micrograph (TEM) of Zika virus particles (dark red). Zika is an RNA (ribonucleic acid) virus from the Flaviviridae family. It is transmitted to humans via the bite of an infected Aedes sp. mosquito. It causes zika fever, a mild disease with symptoms including rash, joint pain and conjunctivitis. In 2015 a previously unknown connection between Zika infection in pregnant women and microcephaly (small head) in newborns was reported. This can cause miscarriage or death soon after birth, or lead to developmental delays and disorders. Magnification: x160,000 when printed at 10 centimetres wide.
! EN_01200023_0003 SCI
Coloured transmission electron micrograph (TEM) of Zika virus particles (blue). Zika is an RNA (ribonucleic acid) virus from the Flaviviridae family. It is transmitted to humans via the bite of an infected Aedes sp. mosquito. It causes zika fever, a mild disease with symptoms including rash, joint pain and conjunctivitis. In 2015 a previously unknown connection between Zika infection in pregnant women and microcephaly (small head) in newborns was reported. This can cause miscarriage or death soon after birth, or lead to developmental delays and disorders. Magnification: x160,000 when printed at 10 centimetres wide.
! EN_01151355_0046 SCI
Bacteriophage. Artwork of an enterohacteria phage T4 particle. A bacteriophage, or phage, is a virus that infects bacteria (in background). Enterobacteria T4 infects Escherichia coli bacteria. It consists of an icosahedral (20-sided) head , which contains the genetic material (helical strands), a tail (cylinder) and tail fibres (leg-like). The tail fibres attach to the surface of a bacterium and then the tail injects the genetic material into the cell. The viral genetic material hijacks the bacterium's own cellular machinery, forcing it to produce more copies of the bacteriophage. When a sufficient number have been produced, the phages exit the cell by lysis, killing it in the process.
! EN_01151355_0133 SCI
Influenza (flu) virus entering a cell, artwork. Embedded in the virus particle's lipid envelope (green) are two types of protein spike, haemagglutinin (H) and neuraminidase (N). These are used to recognise and bind to a host cell and also determine the strain of virus. Once in the host cell the virus hijacks the cell's machinery making it produce new copies of the virus.
! EN_01151355_0192 SCI
Computer artwork of ebola virus particles. Seen on the viral surface are trimeric transmembrane glycoproteins (pink) that facilitate the virus' entry into a host cell. This virus is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure for the disease, but three quarters of patients can recover if provided with sufficient medical support.
This image may not be used in educational posters
! EN_01151355_0273 SCI
Computer artwork of ebola virus particles. Seen on the viral surface are trimeric transmembrane glycoproteins (green) that facilitate the virus' entry into a host cell. This virus is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure for the disease, but three quarters of patients can recover if provided with sufficient medical support.
This image may not be used in educational posters
! EN_01151355_0347 SCI
Immune response to bacteria, artwork. Invading bacteria (yellow) are phagocytosed (engulfed) by macrophages, a type of white blood cell. Fragments of protein (antigen) from the bacteria are displayed on the macrophage's surface. The antigen is recognised by helper T lymphocytes, which secrete chemicals such as cytokines (pink dots) to activate other immune cells, including B lymphocytes. The B lymphocytes differentiate into plasma cells, which produce large numbers of antibodies (orange) that recognise the antigen. The antibodies either neutralise the pathogen or flag it for destruction by other cells.
! EN_01151355_0349 SCI
Ebola virus particles, computer artwork. This virus has a central core containing single-stranded RNA (ssRNA) with a surrounding matrix protein layer. On the viral surface are trimeric transmembrane glycoproteins (pink) that facilitate the entry of the virus into a host cell (across bottom). This virus is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure, but around three-quarters of patients can recover if provided with sufficient medical support.
This image may not be used in educational posters
! EN_01151355_0350 SCI
Ebola virus particles, computer artwork. This virus has a central core containing single-stranded RNA (ssRNA) with a surrounding matrix protein layer. On the viral surface are trimeric transmembrane glycoproteins (pink) that facilitate the entry of the virus into a host cell (across bottom). This virus is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure, but around three-quarters of patients can recover if provided with sufficient medical support.
This image may not be used in educational posters
! EN_01151355_1693 SCI
European ebola epidemic, conceptual computer artwork. Ebola virus (red and blue) is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure for the disease, but three quarters of patients can recover if provided with sufficient medical support.
! EN_01151355_2000 SCI
Cytotoxic T lymphocytes (blue), artwork. T lymphocytes are a type of white blood cell and one of the components of the body's immune system. They recognise a specific site (antigen) on the surface of cells or pathogens and bind to it. Some T lymphocytes then signal for other immune system cells to eliminate the cell. Cytotoxic T lymphocytes eliminate the cell themselves by releasing a protein that forms pores in the cell's membrane.
! EN_01151355_0274 SCI
Computer artwork of ebola virus particles. Seen on the viral surface are trimeric transmembrane glycoproteins (pink) that facilitate the virus' entry into a host cell. This virus is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure for the disease, but three quarters of patients can recover if provided with sufficient medical support.
This image may not be used in educational posters
! EN_01151355_0275 SCI
Computer artwork of ebola virus particles. Seen on the viral surface are trimeric transmembrane glycoproteins (pink) that facilitate the virus' entry into a host cell. This virus is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure for the disease, but three quarters of patients can recover if provided with sufficient medical support.
This image may not be used in educational posters
! EN_01151355_2013 SCI
Computer artwork of ebola virus particles. Seen on the viral surface are trimeric transmembrane glycoproteins (pink) that facilitate the virus' entry into a host cell. This virus is the cause of ebola virus disease in humans and nonhuman primates. It is a severe and often fatal disease with symptoms including fever, fatigue, muscle aches, vomiting, diarrhoea and haemorrhaging (internal bleeding). There is no cure for the disease, but three quarters of patients can recover if provided with sufficient medical support.
This image may not be used in educational posters
EN_00972257_3008 STO
virus and blood cells
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EN_00972257_3009 STO
virus and blood cells
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EN_00972257_3010 STO
virus attacking blood cells
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EN_00972257_3011 STO
virus illustration
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EN_00958165_5511 PHO
Illustration of a multipolar neuron, a type of neuron that possesses a single axon and many dendrites. This allows for the integration of a great deal of information from other neurons. Multipolar neurons constitute the majority of neurons in the brain and include motor neurons and interneurons.

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