Photo Researchers ftp March 2011

Bright field microscopy of fossil plant spores on tasmanite plants. Magnification x10 @ 35mm.

Phase contrast microscopy of fossil plant spores from Tasmanite plants on Kentucky Devonian shale. Magnification x50 @ 35mm.

Dark field microscopy of fossil plant spores from Tasmanite plants on Kentucky Devonian shale. Magnification x50 @ 35mm.

Phase contrast microscopy of fossil plant spores from Tasmanite plants on Kentucky Devonian shale. Magnification x25 @ 35mm.

Dark field microscopy of fossil plant spores from Tasmanite plants on Kentucky Devonian shale. Magnification x25 @ 35mm.

Bright field microscopy of fossil plant spores on tasmanite plants. Magnification x25 @ 35mm.

Dark field microscopy of fossil plant spores from Tasmanite plants on Kentucky Devonian shale. Magnification x25 @ 35mm.

Bright field microscopy of fossil plant spores on tasmanite plants. Magnification x25 @ 35mm.

Light micrograph of human stool sample showing trophozites of Giardia lamblia, a flagellated protozoan parasite that colonizes and reproduces in the s...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis; amastigotes in spleen. Brightfield, magnification 25X at 35m...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis; amastigotes in liver cells. Brightfield, magnification 400X...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis; amastigotes in liver cells. Brightfield, magnification 400X...

Bright field microscopy of fossil plant spores on tasmanite plants. Magnification x25 @ 35mm.

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis. Phase contrast, magnification 250X at 35mm.

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis. Phase contrast, magnification 250X at 35mm.

Differential interference contrast microscopy of fossil plant spores from Tasmanite plants on Kentucky Devonian shale. Magnification x50 @ 35mm.

Differential interference contrast microscopy of fossil plant spores from Tasmanite plants on Kentucky Devonian shale. Magnification x50 @ 35mm.

Color-enhanced Scanning Electron Micrograph (SEM) of two T-lymphocytes, a type of white blood cell involved in the stimulation (Helper T-cells) and re...

Light micrograph of a section of human thymus showing medulla with Hassall's corpuscules; magnification 250X at 35mm; brightfield. The thymus is a spe...

Light micrograph of a section of human thymus showing medulla, lymphocytes (thymocytes) and pale epithelial reticular cells; magnification 250X at 35m...

Light micrograph of a section of human thymus showing medulla, lymphocytes (thymocytes) and pale epithelial reticular cells; magnification 400X at 35m...

Light micrograph (LM) of Paramecium aurelia (living). Differential Interference Contrast (DIC). Magnification 125x at 35mm.

Light micrograph (LM) of Paramecium aurelia (living). Differential Interference Contrast (DIC). Magnification 125x at 35mm.

Light micrograph (LM) of Paramecium aurelia (living). Differential Interference Contrast (DIC). Magnification 125x at 35mm.

Light micrograph of a section of human thymus showing medulla with Hassall's corpuscules; magnification 10X at 35mm; brightfield. The thymus is a spec...

Light micrograph of a section of human thymus showing medulla with Hassall's corpuscules; magnification 10X at 35mm; brightfield. The thymus is a spec...

Bright field microscopy showing red onion cells in hypertonic solution. Hypertonic solutions contain high concentration of solute relative to the cell...

Bright field microscopy showing a red onion cells in isotonic solution. Magnification x25 @ 35 mm. Image 2 of 3 (see 3Q3348 and 3Q3350 for hypertonic...

Bright field microscopy showing a red onion plant in a hypotonic solution. Hypotonic solutions contain low concentration of solute relative to the cel...

Bright field microscopy showing red onion cells in hypertonic solution. Hypertonic solutions contain high concentration of solute relative to the cell...

Bright field microscopy showing a red onion cells in isotonic solution. Magnification x50 @ 35 mm. Image 2 of 3 (see 3Q3354 and 3Q3356 for hypertonic...

Bright field microscopy showing a red onion plant in a hypotonic solution. Hypotonic solutions contain low concentration of solute relative to the cel...

Light micrograph (LM) showing Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis. Immunocompromised pa...

Light micrograph (LM) showing Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis. Immunocompromised pa...

Light micrograph (LM) showing Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis. Immunocompromised pa...

Light micrograph (LM) of peritrichous ciliates in the genus Epistylis (living). Nomarski contrast. Magnification 40x at 35mm.

Light micrograph of a ciliate in the genus Stentor. Living. Nomarski Interference Contrast. Magnification 50x at 35mm.

Light micrograph (LM) of peritrichous ciliates in the genus Carchchesium (living). Phase contrast. Magnification 40x at 35mm.

Light micrograph (LM) of a ciliate in the genus Paramecium feeding. Nomarski Interference Contrast. Magnification 150x at 35mm.

Light micrograph (LM) of a ciliate in the genus Paramecium. Nomarski Interference Contrast. Magnification 40x at 35mm.

Light micrograph (LM) showing a ciliate in the genus Vorticella reproducing by binary fission. Anoptral contrast. Magnification 125x at 35mm.

Light micrograph showing ciliates in the genus Vorticella (living). Anoptral contrast. Magnification 100x at 35mm.

Light micrograph (LM) of peritrichous ciliates in the genus Carchchesium (living). Phase contrast. Magnification 40x at 35mm.

Light micrograph of Amoeba proteus, living specimen; phase contrast, magnification 50x at 35mm.

Light micrograph of the small oligotrich ciliate Halteria, living specimen. Phase contrast. Magnification 250x at 35mm.

Light micrograph (LM) of a ciliate in the genus Paramecium. Stained for silver line system. Magnification 100x at 35mm.

Light micrograph (LM) of a ciliate in the genus Paramecium (living). This image shows how flexible these protozoa are. Nomarski Interference Contrast....

Light micrograph (LM) of Actinophyrs, a common heliozoan protist, living; Nomarski interference contrast, magnification 160x at 35mm.

Light micrograph of Amoeba proteus, living specimen, showing cytoplasm and contractile vacuole; phase contrast, magnification 200x at 35mm.

Light micrograph of Amoeba sp., living specimen, wild, with ingested diatom visible. Anoptral contrast, magnification 80x at 35mm.