Microscopic Biological Samples

Close-up images of various microorganisms and cellular structures, revealing intricate details of parasites and mold growth in a scientific context.

This photomicrograph depicts an Entamoeba histolytica parasitic trophozoite, in which you can clearly see a single nucleus with its centrally placed karyosome, along with six ingested erythrocytes, or red blood cells (RBCs). CDC 1970

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This photomicrograph of a trichrome-stained stool sample revealed the presence of this Entamoeba coli cyst, which contained a cluster of ribbon-like chromatoid bodies dyed black. Although difficult to discern, a number of nuclei were also visible. CDC/Dr Mae Melvin 1968

This photomicrograph depicts an Entamoeba histolytica parasitic trophozoite, in which you can clearly see a single nucleus with its centrally placed karyosome, along with six ingested erythrocytes, or red blood cells (RBCs). CDC 1970

Under 1150X magnification, this photomicrograph of a trichrome stained specimen revealed the presence of a parasitic cyst, Iodamoeba butschlii (buetschlii). CDC/ Dr. Green 1967

mould growing on yoghurt, group ascomycetes, producing spores, in cup-shape asci.

This photomicrograph of a trichrome-stained specimen revealed the presence of a parasitic trophozoite, Iodamoeba butschlii (buetschlii), which contained well-visualized achromatic granules in its cytoplasm. CDC/Dr Mae Melvin 1977

This unstained photomicrograph revealed the presence of an elongated Entamoeba moshkovskii trophozoite, which had been cultured in the laboratory. CDC/Dr Mae Melvin 1977

This photomicrograph of a trichrome-stained tissue sample revealed the presence of a cyst of a Vermamoeba vermiformis, formerly Hartmannella vermiformis, parasitic amoeba. This cyst morphology was atypical, as usually V. vermiformis contains only one nucleus, CDC/Dr George Healy 1973

This photomicrograph depicts an Entamoeba histolytica parasitic trophozoite, in which you can clearly see a single nucleus with its centrally placed karyosome, along with six ingested erythrocytes, or red blood cells (RBCs). CDC 1970

Trypanosoma cruzi. Photomicrograph of Trypanosoma cruzi, the parasite protozoan that causes Chagas' disease (American trypanosomiasis).

This photomicrograph of a trichrome-stained specimen revealed the presence of a parasitic trophozoite Iodamoeba butschlii (buetschlii), however, in this case there were no visible achromatic granules, which were visible in the trophozoite shown in PHIL 14786. CDC/ Dr. Mae Melvin

Under 50X magnification, this photomicrograph of an agar medium revealed the presence of numerous non-pathogenic Naegleria gruberi amoebae. CDC 1971

Processed using the iron-hematoxylin staining method, this photomicrograph revealed the presence of an Entamoeba histolytica trophozoite, and a number of paler Endolimax nana trophozoites. CDC/ Dr. Mae Melvin 1977

Under 1150X magnification, this photomicrograph of a trichrome stained specimen revealed the presence of an immature, parasitic, binucleate cyst, Entamoeba coli. CDC/ Dr. Green 1967

Abstract colored bubbles from slime

This photomicrograph of a trichrome-stained specimen revealed the presence of a parasitic trophozoite, Iodamoeba butschlii (buetschlii), which contained well-visualized achromatic granules in its cytoplasm. CDC/Dr Mae Melvin 1977

Microscope view of mens health Prostate Cancer cells in tissue culture showing walls, nucleus and organelles.

Beautiful abstract art of Ebru marbling painting techniques on water with paints

Aerenchyma section of small leaf of water lily (genus Nymphaea), Nymphaeaceae, seen under a microscope, at x100x2 magnification.

Under a magnification of 100X, this photomicrograph of a concentrated, unstained specimen revealed the presence of two different protozoan parasites, Entamoeba coli , and Endolimax nana . CDC/ Dr. Moore 1972

Chlamydia trachomatis. Light micrograph of the parasite bacterium Chlamydia trachomatis. Chlamydia trachomatis is responsible for the sexually transmitted disease lymphogranuloma venereum and the eye disease trachoma and inclusion conjunctivitis (tric). Presence of C. trachomatis in the human genital tract accounts for many cases of non-specific urethritis. Magnification 200X.

Multiple squamous epithelium under the microscope - Abstract pink dots on white background.

Staphylococcus aureus bacteria seen under a microscope.

This photomicrograph of a brain tissue specimen depicts the cytoarchitectural changes associated with a free-living amebic infection, which may have been caused by either a Naegleria fowleri , or an Acanthamoeba sp. organism. These organisms were found in the brain of a Japanese Prisoner of war in the 1950's, before we knew about the free living amebae, and how they attack the brain. CDC/ Dr. Martin D. Hicklin 1964

Germination with Zoospore formation in yellow algae, genus Vaucheria, golden algae.

multi colored oil circles on the water, colorful background

Under 1150X magnification, this photomicrograph of an iron-hematoxylin stained specimen, revealed the presence of a cyst (arrowhead) of what is usually a nonpathogenic intestinal protozoan, Entamoeba polecki, in which you can see a round inclusion body, and its single nucleus, with a centrally located karyosome. CDC/Dr Mae Melvin 1967

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MRSA bacteria, illustration

This photomicrograph of a brain tissue specimen depicts the cytoarchitectural changes associated with a free-living amebic infection, which may have been caused by either a Naegleria fowleri , or an Acanthamoeba sp. organism. These organisms were found in the brain of a Japanese Prisoner of war in the 1950's, before we knew about the free living amebae, and how they attack the brain. CDC/ Dr. Martin D. Hicklin 1964

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Brain: HIV encephalopathy

Spicules of the gorgonian Leptogorgia sarmentosa, Gorgoniidae, seen under a microscope at high magnification.

Microphotograph of ciliated Protozoan, genus Vorticella.

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This photomicrograph of a trichrome-stained specimen revealed the presence of a parasitic cyst, Entamoeba histolytica, which contained a single nucleus and a number of elliptical-shaped chromatin bodies. CDC/Dr Mae Melvin 1977

This photomicrograph of a trichrome-stained specimen revealed a single Iodamoeba butschlii (buetschlii) parasitic cyst, in which a large achromatic glycogen vacuole was clearly visible, and a single black-stained intranuclear karyosome. CDC/Dr Mae Melvin 1977

Longitudinal section of proglottids and eggs of Taenia

milkfat, butterfat

Microsporum audouinii fungus, illustration

Bone marrow. Light micrograph of a section through bone marrow showing two megakaryocytes green. These cells produce platelets. Magnification: x400 wh...

Yersinia enterocolitica bacteria, illustration

Eyelashes in eyelid

Spores of Rose rust

Under 1125X magnification, this photomicrograph of a trichrome-stained specimen revealed some of the ultrastructural detail exhibited by a parasitic trophozoite, Entamoeba coli. CDC 1971

Acanthamoeba is a microscopic, free-living amoeba, or amoeba (single-celled living organism), that can cause rare but serious eye, skin, and central nervous system infections. The amoeba is found worldwide in the environment in water and soil. The amoeba can spread to the eyes through the use of contact lenses, cuts or wounds in the skin, or by being inhaled into the lungs. Most people will be exposed to Acanthamoeba in their lifetime, but very few will become ill from this exposure

This photomicrograph of a trichrome-stained specimen revealed an immature Entamoeba coli cyst, within which were two visible nuclei located at the periphery. CDC/Dr Mae Melvin 1977

Using trichrome staining, this photomicrograph depicts a trophozoite of the unicellular parasite, Entamoeba histolytica. Colored purple, the trophozoite, seen here in the center of the micrograph, is one of the phases of the life cycle that a protozoan organism goes through, as it matures, and is the active feeding phase of its growth . Other particles surrounding the trophozoite represent debris from the blade specimen. CDC/DPDx - Melanie Moser

Scanning electron microscopic image of Smallpox virus highly contagious infectious disease

mixed phytoplankton freshwater, living anoptal contrast. magn. x80

This photomicrograph of a specimen stained with Wheatleys trichrome revealed the presence of a parasitic trophozoite, Entamoeba histolytica. The view has been improved using an oil emersion technique. CDC/Dr Lanny Dykes 1976

Pollen Marigold

This photomicrograph of a trichrome-stained specimen revealed the presence of a cyst of a Vermamoeba vermiformis, formerly Hartmannella vermiformis, parasitic amoeba. Note how the cyst wall is made up of two layers and an outer wrinkled ectocyst and an inner endocyst wall. CDC/Dr George Healy 1973

Diatoms Chaetoceros under the optical microscope

Brain: cerebral toxoplasmosis

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This iodine-stained photomicrograph depicts the cyst of an amoebic parasite Iodamoeba butschlii (buetschlii). CDC/Dr Mae Melvin 1977

Oral mucosa with bacteria epithelial cells with bacteria from the oral cavity 200x

human spermatozoa living under nomarski illumination x160 1/2000th second

Clostridium tetani, causative agent of tetanus, seen under a microscope with counterstaining, at x650 magnification.

This iodine-stained photomicrograph depicts the cyst of an amoebic parasite Iodamoeba butschlii (buetschlii). CDC/Dr Mae Melvin 1977

Trichophyton rubrum fungi, artwork

This photomicrograph was created from an unstained culture specimen and revealed the presence of a parasitic trophozoite, Entamoeba moshkovskii, which had ingested a rice particle. This trophozoite had extended a single pseudopodium. CDC/Dr Mae Melvin 1977

Thiomargarita magnifica, illustration

Enlarged section of an apothecium lichen, Xanthoria parietina, seen under a microscope, Teloschistaceae.

Under 1125X magnification, this 1973 photomicrograph depicts a cyst of a free-living amoeba, the protozoan Acanthamoeba polyphaga. CDC/Dr. George R. Healy 1973

Clostridium perfringens is a gram-positive bacillus bacterium that produces an exotoxin (alpha-toxin) capable of digesting human muscle and other tissues. It is the cause of gas gangrene in infected wounds and food poisoning in humans. Light micrograph.

Microphotograph of spores of caries in wheat (Tilletia titici), at x275 magnification.

Photomicrograph of Hair Follicle

HPV infection. Light microscopy of cervical smear showing epithelial cells infected with the human papilloma virus (HPV). HPV causes genital warts by parakeratosis and is implicated in the development of cervical cancer. Infected cells show anomalies in their shape and structure.

Microphotograph of starch of maize or corn (Zea mays), Poaceae, at x350 magnification.

Microphotograph of Euglena, unicellular algae of the genus Euglena, seen under a microscope.

Aerial view of the pink salt flats and the flamingos with their shadow in Sicily, Italy.

This photomicrograph of a trichrome-stained specimen revealed the presence of a binucleate cyst of Entamoeba hartmanni (arrow). The cysts of E. hartmanni are similar to those of E. histolytica, but smaller, measuring 5 to 10 m. Mature cysts contain four nuclei which have a small centrally located discrete karyosome and evenly distributed peripheral chromatin. Cysts may not be visible on unstained specimens. The cytoplasm of mature cysts may contain diffuse glycogen and rounded or elongated chromatoid bodies with rounded ends. CDC/Dr Mae Melvin 1977

Parabasal cells

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Cross section of a leaf parasitized by the fungus Erisifa, Ascomycetes, seen under a microscope.

Escherichia coli, Schizomycetes, seen under a microscope with counterstaining.

Sunflower stalk cross-section under the microscope, (Helianthus Stem C.S.), 400x

Under 31X magnification, this photomicrograph of an agar medium revealed the presence of numerous non-pathogenic Naegleria gruberi amoebae. CDC 1971

This photomicrograph of a trichrome-stained specimen revealed the presence of a parasitic trophozoite, Iodamoeba butschlii (buetschlii), which contained achromatic granules in its cytoplasm. CDC/Dr Mae Melvin 1977

Under 900X magnification, this photomicrograph of an iron-hematoxylin stained section of brain tissue revealed the presence of an amoebic, cyst-stage parasite, Iodamoeba butschlii (buetschlii). CDC/Dr Martin Hicklin 1964

Beach Hair Hair Leaf Cross -section 100x

Coccidioidomycosis fungus, illustration

Crandallite, phosphate, section.

Stonycoral Ghostgoby, Pleurosicya micheli, On hard coral, Kapalai, Sabah, Borneo, Malaysia

Lung: Pneumocystis carinii pneumonia (PCP) with HIV

Fragile X diagnostic test - female carrier

Under 900X magnification, this photomicrograph revealed the presence of a parasitic organism Entamoeba histolytica in this amoeboma tissue sample. An amoeboma, also known as an amoebic granuloma, is a possible complication of an amoebic infection, after which a granuloma forms around the pathogen, usually in the wall of the cecum and ascending colon. CDC/Dr Healy 1966

Lichen cross -sections through the symbion body 200x

Metaplasia

Spores of Rose rust

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Microphotograph of asexual reproduction stage of Paramecium putrinum, Protozoan.

Green microalgae freshwater Closterium

Section of human thyroid follicle in different functional states seen under a microscope, at x400 magnification.

Under 500X magnification, this photomicrograph of an unstained direct mount specimen revealed the presence of a cyst of the protozoan parasite, Entamoeba coli. CDC/Dr Moore 1972

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