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This negatively-stained transmission electron micrograph (TEM) revealed the presence of a number of influenza virus virions. This virus is a Orthomyxoviridae virus family member.Created: 1975

This montage of six transmission electron micrographs (TEM) depicted three different Poxviridae family members, and their morphologic similarities in both their M, or mulberry form, and their C, or capsular form. The three viruses include the cowpox, raccoonpox, and the gerbilpox viruses.The Poxviridae viruses carry at their core, a genome composed of a single, linear double-stranded DNA segment. Before its eradication, one of the most infamous viruses known, the smallpox virus, Variola major, was a member of this family.Created: 1975

Highly magnified at 310,000X, this negative-stained transmission electron micrograph (TEM) depicted a smallpox (variola) virus particle, or a single virion. Variola is a double-stranded DNA virus in the genus, Orthopoxvirus. The virus enters the body via the oropharynx, or respiratory mucosa, spreads systemically, and eventually localizes in small blood vessels of the dermis, which is the layer of skin located below the more superficial epidermis.Created: 1968

This negatively-stained transmission electron micrograph (TEM) revealed the presence of a number of Hong Kong flu virus virions, the H3N2 subtype of the influenza A virus. This virus is a Orthomyxoviridae virus family member, and was responsible for the flu pandemic of 1968-1969, which infected an estimated 50,000,000 people in the United States, killing 33,000. Note the proteinaceous coat, or capsid, surrounding each virion, and the hemagglutinin-neuraminidase spikes, which differ in terms of their molecular make-up from strain to strain.Created: 1975

This compilation of a number of transmission electron micrographs (TEM), revealed some of the morphologic differences displayed by three Poxviridae family members: Yaba-like disease (YLD) virus, Yabapox virus, and Tanapox virus, each in its M and C forms. M form represents the virions in their mulberry configuration, whereupon, the capsid appears much like a mulberry, and the C form represents the capsular appearance of the virions’ capsid, or external protein coat.Created:

This negatively-stained transmission electron micrograph (TEM) revealed the presence of a number of Hong Kong flu virus virions, the H3N2 subtype of the influenza A virus. This virus is a Orthomyxoviridae virus family member, and was responsible for the flu pandemic of 1968-1969, which infected an estimated 50,000,000 people in the United States, killing 33,000. Note the proteinaceous coat, or capsid, surroundind each virion, and the hemagglutinin-neuraminidase spikes, which differ in terms of their molecular make-up from strain to strain.Created: 1975

This negatively-stained transmission electron micrograph (TEM) revealed the presence of numerous doulble-stranded, full-length DNA-containing (dsDNA) spumavirus, or foamyvirus virions. One of the identifying morphologic characteristics displayed by these virions is the spikey nature of their protective proteinaceous capsid, which is a feature evident in this TEM.Created: 1975

This negative-stained transmission electron micrograph (TEM) depicts the ultrastructural details of a number of influenza virus particles, or virions. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organismThe flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent this illness is by getting a flu vaccination each fall.Every year in the United States, on average:- 5% to 20% of the population gets the flu- more than 200,000 people are hospitalized from flu complications, and- about 36,000 people die from flu. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications. See PHIL 10072 for a colorized version of this image.Created: 1973

This negatively-stained transmission electron micrograph (TEM) revealed the presence of numerous doulble-stranded, full-length DNA-containing (dsDNA) spumavirus, or foamyvirus virions. One of the identifying morphologic characteristics displayed by these virions is the spikey nature of their protective proteinaceous capsid, which is a feature evident in this TEM.Created: 1975

This negative-stained transmission electron micrograph (TEM) depicts the ultrastructural details of an influenza virus particle, or virion. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organismThe flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent this illness is by getting a flu vaccination each fall.Every year in the United States, on average:- 5% to 20% of the population gets the flu- more than 200,000 people are hospitalized from flu complications, and- about 36,000 people die from flu. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications. See PHIL 10073 for a colorized version of this image.Created: 1981

This negative-stained transmission electron micrograph (TEM) image depicted the ultrastructural details of an Orf virus, a member of the genus Parapoxvirus. Note the spiral arrangement of the external tubular ridges on the ovoid-shaped virus particle, or virion.Created:

At a magnification of 1000X, twice that of PHIL 10557, this scanning electron micrograph (SEM) revealed some of the minute exoskeletal details found at the proboscis tip of an unidentified mosquito found deceased in the suburbs of Decatur, Georgia. The proboscis is the organ used by this, as well as other like insects, to feed upon the blood of a warm-blooded host, including human beings. What you see here, is the sheath that encases a pair of needle-sharp "stylets", which together are known as the "fascicle". The larger of the two stylets, known as the "labrum", when viewed in cross-section, takes on the shape of a "V", and acts as a gutter, which directs the ingested host blood towards the insect's mouth. The hair-like structures are known as "setae", and are really extensions of the insect's exoskeletal, chitinous covering. These setae act as sensory organs, transmitting impulses indicating changes in the organism's environment.Created: 2008

This transmission electron micrograph (TEM) revealed some of the ultrastructural morphology displayed by norovirus virions, or virus particles.Noroviruses belong to the genus Norovirus, and the family Caliciviridae. They are a group of related, single-stranded RNA, nonenveloped viruses that cause acute gastroenteritis in humans. Norovirus was recently approved as the official genus name for the group of viruses provisionally described as Norwalk-like viruses (NLV). See PHIL 10708 for a colorized version of this image.Created:

At a magnification of 1000X, twice that of PHIL 10557, this scanning electron micrograph (SEM) revealed some of the minute exoskeletal details found at the proboscis tip of an unidentified mosquito found deceased in the suburbs of Decatur, Georgia. The proboscis is the organ used by this, as well as other like insects, to feed upon the blood of a warm-blooded host, including human beings. What you see here, is the sheath that encases a pair of needle-sharp "stylets", which together are known as the "fascicle". The larger of the two stylets, known as the "labrum", when viewed in cross-section, takes on the shape of a "V", and acts as a gutter, which directs the ingested host blood towards the insect's mouth. The hair-like structures are known as "setae", and are really extensions of the insect's exoskeletal, chitinous covering. These setae act as sensory organs, transmitting impulses indicating changes in the organism's environment.Created: 2008

This transmission electron micrograph (TEM) revealed some of the ultrastructural morphology displayed by norovirus virions, or virus particles.Noroviruses belong to the genus Norovirus, and the family Caliciviridae. They are a group of related, single-stranded RNA, nonenveloped viruses that cause acute gastroenteritis in humans. Norovirus was recently approved as the official genus name for the group of viruses provisionally described as Norwalk-like viruses (NLV). See PHIL 10706 for a colorized version of this image.Created:

Magnified 500X, this scanning electron micrograph (SEM) revealed some of the minute exoskeletal details found at the proboscis tip of an unidentified mosquito found deceased in the suburbs of Decatur, Georgia. The proboscis is the organ used by this, as well as other like insects, to feed upon the blood of a warm-blooded host, including human beings. What you see here, is the sheath that encases a pair of needle-sharp "stylets", which together are known as the "fascicle". The larger of the two stylets, known as the "labrum", when viewed in cross-section, takes on the shape of a "V", and acts as a gutter, which directs the ingested host blood towards the insect's mouth. The hair-like structures are known as "setae", and are really extensions of the insect's exoskeletal, chitinous covering. These setae act as sensory organs, transmitting impulses indicating changes in the organism's environment.Created: 2008

This transmission electron micrograph (TEM) revealed the presence of numbers of Nodamura virus virions. At its core, the Nodamura virus possesses a positive-sense, single-stranded RNA virus ((+) ssRNA) genome. Its outer protein coat, or capsid, is icosahedral (T=3) in shape, which means that its composed of 32 equilateral, triangular facets.Created: 1975

Magnified 1500X, this scanning electron micrograph (SEM) revealed some of the minute exoskeletal details found at the proboscis tip of an unidentified mosquito found deceased in the suburbs of Decatur, Georgia. The proboscis is the organ used by this, as well as other like insects, to feed upon the blood of a warm-blooded host, including human beings. What you see here, is the sheath that encases a pair of needle-sharp "stylets", which together are known as the "fascicle". The larger of the two stylets, known as the "labrum", when viewed in cross-section, takes on the shape of a "V", and acts as a gutter, directing the ingested host blood towards the insect's mouth. The hair-like structures are known as "setae", and are really extensions of the insect's exoskeletal, chitinous covering. These setae act as sensory organs, transmitting impulses indicating changes in the organism's environment.Created: 2008

This transmission electron micrograph (TEM) revealed the presence of numbers of Nodamura virus virions. At its core, the Nodamura virus possesses a positive-sense, single-stranded RNA virus ((+) ssRNA) genome. Its outer protein coat, or capsid, is icosahedral (T=3) in shape, which means that its composed of 32 equilateral, triangular facets.Created: 1975

This colorized transmission electron micrograph (TEM) depicts a salivary gland that had been extracted from a mosquito, which was infected by the Eastern equine encephalitis (EEE) virus, which has been colorized red; magnified 83,900x.Created: 1968

This transmission electron micrograph (TEM) revealed the presence of numbers of Nodamura virus virions. At its core, the Nodamura virus possesses a positive-sense, single-stranded RNA virus ((+) ssRNA) genome. Its outer protein coat, or capsid, is icosahedral (T=3) in shape, which means that its composed of 32 equilateral, triangular facets.Created: 1975

This 1975 transmission electron micrograph (TEM) revealed the presence of a number of Eastern Equine Encephalitis (EEE) virus virions that happened to be in a specimen of central nervous system tissue. EEE is an zoonotic arbovirus, which means that it’s spead to human beings through the bite of an infected mosquito. EEE virus (EEEV) occurs in the eastern half of the United States where it causes disease in humans, horses, and some bird species. Because of the high mortality rate, EEE is regarded as one of the most serious mosquito-borne diseases in the United States. EEE is a Togaviridae virus family member, and the genus Alphavirus.Created: 1975

This negatively-stained transmission electron micrograph (TEM) revealed the presence of numerous Reovirus type-3 virions. This virus organism is a member of the family, Reoviridae, genera of which include the Coltivirus, i.e., Colorado tick fever, Orbivirus, i.e., bluetongue virus, and Orthoreovius, within which belong these virions.Created: 1975

This negatively-stained 1975 transmission electron micrograph (TEM) revealed the presence of a number of Eastern equine encephalitis (EEE) virus virions in this tissue specimen. VEE is a Togaviridae family member, and a member of the genus Alphavirus.Eastern equine encephalitis (EEE) is a mosquito-borne viral disease. EEE virus (EEEV) occurs in the eastern half of the United States where it causes disease in humans, horses, and some bird species. Because of the high mortality rate, EEE is regarded as one of the most serious mosquito-borne diseases in the United States.Created: 1975