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Human tongue bacteria from Human tongue scrape. Recorded using Phase Contrast illumination, horizontal field of view 50 micrometres.
Human tongue bacteria from Human tongue scrape. Recorded using Phase Contrast illumination, horizontal field of view 50 micrometres.
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HD White cells flowing through a green tube
HD White cells flowing through a green tube
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Filamentous and motile bacteria next to sloughed cell from the surface of a Human tongue. Recorded with Nomarski Differential Interference Contrast with a horizontal field of view 130 micrometres.
Filamentous and motile bacteria next to sloughed cell from the surface of a Human tongue. Recorded with Nomarski Differential Interference Contrast with a horizontal field of view 130 micrometres.
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Vorticella sp. are often found in clusters, each stalk is individually attached to the surface. The stalk is made up of an external sheath that contains a fluid and a spirally arranged contractile fibril called a myoneme that contracts when stimulated.
When disturbed, the vorticella contracts and the stalk thread is shortened, causing the sheath to coil tightly like a spring.Phase Contrast illumination.
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Vorticella sp. filter feeding - though often found in clusters, each stalk is individually attached to the surface.
The stalk is made up of an external sheath that contains a fluid and a spirally arranged contractile fibril called a myoneme that contracts when stimulated. When disturbed, the vorticella contracts and the stalk thread is shortened,...
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Vorticella sp. -though often found in clusters, each stalk is individually attached to the surface.
The stalk is made up of an external sheath that contains a fluid and a spirally arranged contractile fibril called a myoneme that contracts when stimulated. When disturbed, the vorticella contracts and the stalk thread is shortened,...
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Microscopic view of Ciliates and filamentous algae in background
Microscopic view of Ciliates and filamentous algae in background
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Microscopic view of Ciliates and filamentous algae in background
Microscopic view of Ciliates and filamentous algae in background
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Duckweed supporting clusters of Vorticella sp.
Duckweed supporting clusters of Vorticella sp.
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Dark Field view of the Ciliate Vorticella sp. filter feeding
Dark Field view of the Ciliate Vorticella sp. filter feeding
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Vorticella sp. -though often found in clusters, each stalk is individually attached to the surface.
The stalk is made up of an external sheath that contains a fluid and a spirally arranged contractile fibril called a myoneme that contracts when stimulated. When disturbed, the vorticella contracts and the stalk thread is shortened,...
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Dark Field view of Vorticella filter feeding on bacteria.
Dark Field view of Vorticella filter feeding on bacteria.
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Dark Field view of Vorticella filter feeding on bacteria.
Dark Field view of Vorticella filter feeding on bacteria.
Getty Images
Big school of fusiliers on Maldives
Big school of fusiliers on Maldives.The fusiliers are a family, Caesionidae, of fishes in the order Perciformes. They are related to the snappers, but adapted for feeding on plankton, rather than on larger prey. They are found at reefs...
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Great School of Fusilier Fish on deep blue ocean
Large School of Fusilier Fish on Maldives.The fusiliers are a family, Caesionidae, of fishes in the order Perciformes. They are related to the snappers, but adapted for feeding on plankton, rather than on larger prey. They are found at...
Curated OER
Cell Biology
Look here for a narrative approach to cells origins and discovery by microscopes. Though it is a slightly older clip, it contains some lovely footage of cells up close. Begin with prokaryotes and move onto eukaryotes and the differences...
Curated OER
Miracle Planet - Snow Ball Earth 4/5
A snowball earth would stay frozen once frozen; so what melted the ice? A manganese dioxide deposit gives some clue. One scientist focused on volcanic eruptions as contributing more oxygen into the air and warming the earth. This...