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![](https://media.istockphoto.com/id/1371421170/video/protozoa-protists-unicellular-organism-under-microscope-euglena-paramecium-and-amoebas-800x.jpg?b=1&s=640x640&k=20&c=SRpaLnhuaT4ofZyzG1QLUfhETBNawc9L3g2QCoCC6y4=)
Protozoa protists unicellular organism under microscope Euglena, Paramecium and amoebas 800x magnification
![](https://media.istockphoto.com/id/1221920825/video/the-cladocera-are-an-order-of-small-crustaceans-commonly-called-water-fleas-on-the-slide.jpg?b=1&s=640x640&k=20&c=BAv8BNNxjCdU8lhqsrk4IheGk8U7kE_PTh_t8ni8gMc=)
The Cladocera are an order of small crustaceans commonly called water fleas on the slide under microscope.
![](https://media.istockphoto.com/id/1181579745/video/paramecium-caudatum-is-a-genus-of-unicellular-ciliated-protozoan-and-bacterium-under-the.jpg?b=1&s=640x640&k=20&c=xU3QiePFMeMSYlD1apgKRi-XoAWDgg6Hjy0WtmsLk6g=)
Paramecium caudatum is a genus of unicellular ciliated protozoan and Bacterium under the microscope.
![](https://media.istockphoto.com/id/1003126100/video/shell-of-testacea-amoeba-difflugia-class-lobostoma-top-view-of-the-shell-which-is-assembled.jpg?b=1&s=640x640&k=20&c=JKNjzoPYDAMM9qICFkp7ckCz6EAlKNI7VDTMH3pQndE=)
shell of Testacea amoeba Difflugia class lobostoma top view of the shell,which is assembled from a variety of grains and particles, under the microscope
![](https://media.istockphoto.com/id/1331051020/video/stunning-microcosm-the-progenitors-of-all-life-on-the-planet-algae-and-protozoa-unicellular.jpg?b=1&s=640x640&k=20&c=kUli0AbFNrqBBTew-ssEEN5C0RqsQg4336ot4mBrAfM=)
Stunning microcosm. The progenitors of all life on the planet. Algae and protozoa unicellular microorganisms. Microorganism under the microscope. Drop of fresh water
![](https://media.istockphoto.com/id/1174161668/video/euglena-is-a-genus-of-single-celled-flagellate-eukaryotes-under-microscopic-view-for-education.jpg?b=1&s=640x640&k=20&c=Mv2wKoSHNUZeHoqjsm-a5McoVAXAgNuriVrFA_fjg8I=)
Euglena is a genus of single-celled flagellate Eukaryotes under microscopic view for education.
![](https://media.istockphoto.com/id/1329830505/video/small-groups-of-unicellular-algae-float-in-liquid-under-a-microscope-research-in-a-biological.jpg?b=1&s=640x640&k=20&c=jUz7pMDGSaL9G-H0ZsIRF1K2EBzx5wfIwvZ0xU9Zgk0=)
Small groups of unicellular algae float in liquid under a microscope. Research in a biological laboratory. 1000x magnification.
![](https://media.istockphoto.com/id/1030441398/video/protozoa-amoeba-is-a-type-of-cell-or-organism-which-has-the-ability-to-alter-its-shape.jpg?b=1&s=640x640&k=20&c=AXHa8XZtWNN-RHywu_E-eFtnQ6U8CniewEMsX0oQE8g=)
Protozoa amoeba is a type of cell or organism which has the ability to alter its shape, primarily by extending and retracting pseudopods.
![](https://media.istockphoto.com/id/1181578883/video/frontonia-sp-is-a-genus-of-free-living-unicellular-ciliate-protists-under-the-microscope.jpg?b=1&s=640x640&k=20&c=-CHPbl5ElEDi0oIUot5n1TFx6AgMeHqtQjnpcPdIh4Y=)
Frontonia sp. is a genus of free-living unicellular ciliate protists under the microscope.
![](https://media.istockphoto.com/id/1341395725/video/the-natural-habitat-of-unicellular-organisms-bacteria-algae-a-drop-of-fresh-water-under-a.jpg?b=1&s=640x640&k=20&c=Ek7WknDMj0gxJXajjzl9yTlvUiRhTka5mNriMQCIQsM=)
The natural habitat of unicellular organisms, bacteria, algae. A drop of fresh water under a microscope
![](https://media.istockphoto.com/id/1098369542/video/microbes-in-a-drop-of-fresh-water-from-a-lake-vorticella-in-waste-water-under-the-microscope.jpg?b=1&s=640x640&k=20&c=6It616iHohnVU3Y6yTyPV_ugIzsQKfPCwxHU2gSbHhI=)
Microbes in a drop of fresh water from a lake. Vorticella (organism) in waste water under the microscope. Freshwater bell eats plankton. UHD 4K.
![](https://media.istockphoto.com/id/899343626/video/transparent-microorganism-under-the-microscope-with-internal-organs-as-is-an-alien-organism.jpg?b=1&s=640x640&k=20&c=mmGdURO6QQ9GG0PC4iH8F34vpAcnYnFoHKPLPMb7XYs=)
transparent microorganism under the microscope, with internal organs, as is an alien organism
![](https://media.istockphoto.com/id/917128906/video/transparent-microorganism-under-the-microscope-with-internal-organs-as-is-an-alien-organism.jpg?b=1&s=640x640&k=20&c=VMFcHhKqzsSEAUS9GBLQRY-KfALw5f6mkHzlptUI_Kk=)
transparent microorganism under the microscope, with internal organs, as is an alien organism
![](https://media.istockphoto.com/id/1371421143/video/microscopic-life-in-drop-of-pond-water-view-under-a-microscope-of-microorganism-unicellular.jpg?b=1&s=640x640&k=20&c=XuhLbC94aCC7xL3O5BiKK-UBHgBi4RrrkJwp8iXEziI=)
Microscopic life in drop of pond water view under a microscope of microorganism unicellular organism using dark field filter at high magnification
![](https://media.istockphoto.com/id/1298925377/video/microscopy-of-protozoa-microorganisms-in-the-water-sample-showing-ciliates-paramecium.jpg?b=1&s=640x640&k=20&c=puOv6WEJQgk9tBqcxvjprRSk-jlexo3N9X1LQFEaJ_c=)
Microscopy of protozoa microorganisms in the water sample, showing ciliates, paramecium, bacteria, spirochaete and algae. Motion of single-celled animals under microscope.
![](https://media.istockphoto.com/id/908186322/video/microorganisms-the-inhabitants-of-the-aquarium-under-the-microscope-like-an-alien-organism.jpg?b=1&s=640x640&k=20&c=9RLSbKmEfCb6Qw3HiMuef-knMjhJXmY6kg63IHV1sg4=)
microorganisms,the inhabitants of the aquarium under the microscope,like an alien organism
![](https://media.istockphoto.com/id/1326891019/video/vorticella-colonies-hunt-among-a-vast-field-of-unicellular-algae-a-stunning-microcosm-with.jpg?b=1&s=640x640&k=20&c=mCJpQWZdDCEqH76VQYYJKA6qMZ8ptome9dwbuZjo8E4=)
Vorticella colonies hunt among a vast field of unicellular algae. A stunning microcosm with many microorganisms under a microscope. Dark field method. Oxygen producers in the natural environment. Combating negative climate change. Scientific experimental
![](https://media.istockphoto.com/id/1226337707/video/microscopy-of-parasite-worm-nematode-movement-of-active-parasite-infection-form-in.jpg?b=1&s=640x640&k=20&c=m8hd-iueBCc9dw7-RvUgyBzBjnh6Mchw9FIfwbR4LH4=)
Microscopy of parasite worm nematode (Strongyloides stercoralis). Movement of active parasite infection form in magnification 150x.
![](https://media.istockphoto.com/id/1203519906/video/chloroplast-under-a-microscope-cell-division-cell-structure-cell-division-view-of-leaf.jpg?b=1&s=640x640&k=20&c=BowJv1fkekkTDTiMb1KLwd2epXeMo_iXE-8w8AjVM_8=)
Chloroplast under a microscope. Cell division. Cell structure. Cell division. View of leaf surface showing plant cells under microscope. Virus infection. Green plant cells under microscope. GMO. DNA.
![](https://media.istockphoto.com/id/1203519804/video/chloroplast-under-a-microscope-cell-division-cell-structure-cell-division-view-of-leaf.jpg?b=1&s=640x640&k=20&c=3pPnPg3ok5Z44rAW_jNDutkYsRNt93mkTbfFG5QqqAg=)
Chloroplast under a microscope. Cell division. Cell structure. Cell division. View of leaf surface showing plant cells under microscope. Virus infection. Green plant cells under microscope. GMO. DNA.