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A few more microbes

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Scientific name: Stentor coeruleus
Class: Heterotrichea
Phylum: Ciliophoria


Stentor coeruleus is a protist in the family Stentoridae which is characterized by being a very large ciliate that measures 0.5 to 2 millimetres when fully extended.

Stentor coeruleus specifically appears as a very large trumpet. It contains a macronucleus that looks like a string of beads that are contained within a ciliate that is blue to blue-green in color. Being that it has many myonemes, it has the ability to contract into a ball. It has the ability to swim while both fully extended or contracted.


Stentor coeruleus is known for its regenerative abilities. When this organism is cut in half, each half is able to regenerate a half-sized cell that has its normal anatomy and will look the same way it did prior to being cut.

Eating is accomplished using cilia that carry food into the ciliate's gullet.


Found in a sample of pond water from Attenborough Nature Reserve, Attenborough, Nottinghamshire


Taken in brightfield 





Scientific name: Campanella umbellaria
Class: Oligohymenophorea
Phylum: Ciliophoria


The stalks on Campanella umbellaria do not contract instead the body is contractile. We can also see dark cytoplasm and a very thick peristomial lip this is caused by multiple windings of peristomial cilia, which are also visible here as dark lines on the lip.


Taken from a sample of pond water from Attenborough Nature Reserve, Attenborough, Nottinghamshire


Taken in Brightfield 





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