Photo Researchers ftp March 2011

Light micrograph (LM) of Euglena, a genus of microscopic, single-celled protists. There are about 150 species of euglenas. They live in fresh water, a...

Light micrograph of Amoeba proteus. Magnification 64x at 35mm.

Light micrograph of Amoeba proteus. Magnification 64x at 35mm.

Binary fission, or mitosis of a Paramecium.

Light Micrograph (LM) showing Pneumocystis jirovecii (formerly known as P. carinii). Pneumocystis jirovecii is a yeast-like fungus; pneumonia caused b...

Color-enhanced Scanning Electron Micrograph (SEM) showing macrophage and lymphocytes (types of white blood cells); magnification unknown.

Light Micrograph (LM) showing trophs of Pneumocystis jirovecii (formerly known as P. carinii). Pneumocystis jirovecii is a yeast-like fungus; pneumoni...

Light micrograph (LM) showing trophs of Toxoplasma gondii, a parastic protozoan that causes the disease Toxoplasmosis. Magnification 1000x at 35mm. Gi...

Light micrograph showing trophs of the parasitic protozoan Entamoeba histolytica; magnified 1000x at 35mm; iron hematoxylin stain.

Light micrograph showing Trypanosoma brucei rhodesiense, a parasitic protist species that causes African trypanosomiasis (or sleeping sickness) in hum...

Light micrograph of cysts of Giardia lamblia, a flagellated protozoan parasite that colonizes and reproduces in the small intestine, causing the disea...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis. Giemsa stain, magnification 1000X at 35mm.

Light micrograph showing trophs of the parasitic protozoan Entamoeba histolytica; magnified 1000x at 35mm; trichrome stain.

Light micrograph (LM) showing Theileria microti (formerly Babesia microti), a parasitic, blood-borne protozoan parasite responsible for the Theilerios...

Light micrograph (LM) showing trophs of Plasmodium ovale, a species of parasitic protozoa that causes tertian malaria in humans. It has recently been...

Light micrograph (LM) showing trophs of Plasmodium vivax, a species of parasitic protozoa that causes malaria in humans. Giemsa stain, magnification 1...

Light micrograph (LM) showing trophs of Plasmodium malariae, a species of parasitic protozoa that causes malaria in humans. Giemsa stain, magnificatio...

Light micrograph showing Trypanosoma cruzi, a species of flagellate protozoan responsible for Chagas disease in humans. Magnification 1000X at 35mm; G...

Light micrograph of sporophytes on marchantia liverworts.

Light micrograph (LM) of a section of human tonsil, showing lymphoid tissue (circular features), collagen fibers (blue) and the non-keratinizing strat...

Light micrograph of a fern antheridia and archegonia; Magnification x16 @ 35mm.

Light micrograph of protonema from peat moss (sphagnum). Magnification x40 @ 35mm.

Light micrograph of a antheridial head of Mnium moss; Magnification x8 @ 35mm.

Light micrograph of a fern antheridia; Magnification x32 @ 35mm.

Sporophyte of sphagnum moss. Magnification x10 @ 35mm.

Light micrograph of mature strobilus of a horsetail plant (Equisetum). Magnification x20 @ 35mm.

Color-enhanced Scanning Electron Micrograph (SEM) showing human T-lymphocyte cells. Magnification unknown.

Light micrograph (LM) of plasma cells, white blood cells that produce large volumes of antibodies; magnification unknown.

Color-enhanced photomicrograph of the active form of Entamoeba histolytica, a parasite of humans and the cause of amoebic dysentery. Magnified 1000x a...

Color-enhanced photomicrograph showing infected red blood cells in a patient with malaria. Magnification 1500x at 35mm.

Color-enhanced photomicrograph showing infected red blood cells in a patient with malaria. Magnification 1000x at 35mm.

Color-enhanced photomicrograph showing infected red blood cells in a patient with malaria. Magnification 1000x at 35mm.

Color-enhanced photomicrograph showing infected red blood cells in a patient with malaria. Magnification 1000x at 35mm.

Color-enhanced Transmission Electron Micrograph (TEM) of Toxoplasma gondii, a parastic protozoan that causes the disease Toxoplasmosis. Magnification...

Color enhanced Scanning Electron Micrograph of Euglena, a genus of microscopic, single-celled protists. There are about 150 species of euglenas. They...

Light micrograph (LM) showing Amoeba proteus (living); Differential Interference Contrast (DIC), magnification 128X at 35mm.

Differential interference contrast microscopy of living amoeba proteus in the telophase of mitosis. Magnification 128x @ 35mm.

Differential interference contrast microscopy of living amoeba proteus in the telophase of mitosis. Magnification 128x @ 35mm.

Light micrograph (LM) showing Paramecium caudatum (living specimen). Darkfield. Magnification 80x at 35mm.

Light micrograph (LM) showing Amoeba proteus (living); Phase contrast, magnification 84X at 35mm.

Light micrograph (LM) showing Amoeba proteus (living); Phase contrast, magnification 84X at 35mm.

Light micrograph showing a pair of Amoeba proteus, magnification 84x at 35mm, phase contrast.

Light micrograph (LM) showing Amoeba proteus (living); Phase contrast, magnification 84X at 35mm.

Light micrograph (LM) showing Amoeba proteus (living); Phase contrast, magnification 84X at 35mm.

Light micrograph (LM) showing a protozoan in the taxon Gregarinea. These large Apicomplexan parasites inhabit the intestines of a large number of inve...

Light micrograph of Giardia lamblia, a flagellated protozoan parasite that colonizes and reproduces in the small intestine, causing the disease Giardi...

Phase contrast microscopy of living paramecium caudatum during conjugation, (exchange of micronuclei). Magnification 128x @ 35mm.

Light micrograph (LM) showing a protozoan in the taxon Gregarinea. These large Apicomplexan parasites inhabit the intestines of a large number of inve...

Photomicrograph of horsetail (equisetum). Longitudinal section of a mature strobilus. Magnification x2 @ 35mm.

Amoeba protozoan feeding. Light micrograph showing a single-celled Amoeba engulfing another protozoan. Magnification 160x @ 35mm.