Photo Researchers ftp March 2011

Light micrograph (LM) of peritrichous ciliates in the genus Epistylis (living). Differential Interference Contrast (DIC). Magnification 100x at 35mm.

Light Micrograph (LM) showing cysts of Pneumocystis jirovecii (formerly known as P. carinii) in lung (touch preparation, toluidine blue stain). Pneumo...

Light Micrograph (LM) showing cysts of Pneumocystis jirovecii (formerly known as P. carinii) in lung (touch preparation, toluidine blue stain). Pneumo...

Light Micrograph (LM) showing cysts of Pneumocystis jirovecii (formerly known as P. carinii) in lung (touch preparation, toluidine blue stain). Pneumo...

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light Micrograph (LM) showing trophozoites and intracystic sporozoites of Pneumocystis jirovecii (formerly known as P. carinii) in human lung (touch p...

Light micrograph of a ciliate in the genus Vorticella (living specimen). Differential Interference Contrast (DIC). Magnification 63x at 35mm.

Light micrograph of ciliates in the genus Vorticella (living). Differential Interference Contrast (DIC). Magnification 63x at 35mm.

Light micrograph of ciliates in the genus Vorticella (living, contracted). Differential Interference Contrast (DIC). Magnification 63x at 35mm.

Light micrograph of ciliates in the genus Vorticella (living, extended). Differential Interference Contrast (DIC). Magnification 63x at 35mm.

Light micrograph of ciliates in the genus Vorticella (living, contracted). Differential Interference Contrast (DIC). Magnification 63x at 35mm.

Light micrograph of ciliates in the genus Vorticella (living, extended). Differential Interference Contrast (DIC). Magnification 63x at 35mm.

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 100X at 35mm.

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 100X at 35mm.

Light micrograph (LM) of a section of the spleen, a large lymphatic organ, located in the upper abdomen, with several functions: removing debris from...

Light micrograph (LM) of a section of the spleen, a large lymphatic organ, located in the upper abdomen, with several functions: removing debris from...

Light micrograph (LM) of a section of the spleen, a large lymphatic organ, located in the upper abdomen, with several functions: removing debris from...

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 100X at 35mm.

Light micrograph showing schizonts of Plasmodium falciparum in red blood cells. P. falciparum is a protozoan parasite that causes malaria in humans. P...

Light micrograph showing schizonts of Plasmodium falciparum in red blood cells. P. falciparum is a protozoan parasite that causes malaria in humans. B...

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Phase contrast; magnification 100X at 35mm.

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 100X at 35mm.

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 100X at 35mm.

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis. Brightfield, magnification 400X at 35mm.

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 80X at 35mm.

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 80X at 35mm.

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 80X at 35mm.

Light micrograph (LM) showing Paramecium multimicronucleatum, a ciliate protist. Differential Interference Contrast; magnification 80X at 35mm.

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light micrograph (LM) showing oocysts of Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, in human...

Light micrograph (LM) of Actinophrys sol, a common heliozoan protist, magnified 240x at 35mm.

Light micrograph (LM) of Arcella vulgaris, a freshwater protozoan; magnification 150x at 35mm.

Light micrograph (LM) of the ciliate species Paramecium aurelia. Magnification 120x at 35mm.

Light micrograph (LM) showing a Hypotrich ciliate (order Euplotes). Magnification 200x at 35mm.

Light micrograph (LM) of the hypotrich ciliate protozoan Euplotes. Magnification 150x at 35mm.

Light micrograph (LM) of Actinophrys sol, a common heliozoan protist, magnified 120x at 35mm.

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis. Brightfield, magnification 400X at 35mm.

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis; amastigotes in liver cells. Brightfield, magnification 25X a...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis; amastigotes in liver cells. Brightfield, magnification 25X a...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis; amastigotes in liver cells. Brightfield, magnification 25X a...

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis. Brightfield, magnification 100X at 35mm.

Light micrograph of Leishmania donovani, an important cause of the disease Leishmaniasis. Brightfield, magnification 250X at 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 x10 @ 35mm.

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