Photo Researchers ftp March 2011

Light micrograph (LM) of a ciliate in the genus Stentor, seen in gelatinous tube in a duckweed. Magnification 20x at 35mm.

Light micrograph of "radiolarian ooze," a soft siliceous sediment that covers large areas of the deep ocean floor, consisting of the skeletal remains...

Light micrograph of spores and elaters of a horsetail plant (equisetum hyemale). Magnification x30 @ 35mm.

Light micrograph of various radiolarians. Rheinberg illumination; magnification 40x at 35mm.

Light micrograph (LM) of a 1.5 millimeter transverse section of a ciliate in the genus Paramecium. H&E stain; magnification 325x at 35mm.

Light micrograph of Amoeba proteus, Nomarski interference illumination, magnified 160x at 35mm.

Light micrograph (LM) of Actinophyrs, a common heliozoan protist, living; Nomarski interference contrast, magnification 200x at 35mm.

Micrograph of live and dead sphagnum cells. Magnification x120 @ 35mm.

Micrograph of live and dead sphagnum cells. Magnification x60 @ 35mm.

Light micrograph of spores and elaters of a horsetail plant (equisetum hyemale). Magnification x30 @ 120mm.

Light micrograph of spores and elaters of a horsetail plant (equisetum hyemale). Magnification x60 @ 35mm.

Micrograph of the cross section of a moss gametophyte showing epidermis, cortex, and hydroid. Magnification x20 @ 35mm.

Light Micrograph (LM) of a human lung impression smear showing Pneumocystis jirovecii (formerly known as P. carinii). Pneumocystis jirovecii is a yeas...

Light micrograph of fecal smear showing Cryptosporidium parvum, a parasitic protozoan that causes the intestinal disease cryptosporidiosis, oocysts st...

Light Micrograph (LM) of a section of human lung alveolus containing Pneumocystis jirovecii (formerly known as P. carinii). Pneumocystis jirovecii is...

Light micrograph showing the parasitic protozoa Plasmodium malariae (see the most central blood cell) which causes malaria in humans; band form tropho...

Light micrograph of pteridophyta fern; antheridium of a dryopteris. 1.5mm section with magnification x250 @ 35mm.

Light micrograph of pteridophyta ferns; dryopteris vs. prothallus archegonium. Magnification x100 @ 35mm.

Light micrograph of human spleen showing pulp, sinusoids (small blood vessels), trabecula; magnification 16x at 35mm. The spleen is a large lymphatic...

Light micrograph (LM) of a ciliate in the genus Stentor, seen here contracted and swimming. Darkfield illumination. Magnification 25x at 35mm.

Light micrograph (LM) of a small ciliate in the genus Stentor, seen among algae. Darkfield illumination. Magnification 25x at 35mm.

Eggplant proembryo. The proembryo are cells that are formed after fertilization within the ovule of a flowering plant, before formation of the embryo.

Snow crystal.

Light micrograph (LM) of a small ciliate in the genus Stentor, seen here swimming among algae. Darkfield illumination. Magnification 25x at 35mm.

Light micrograph (LM) of a ciliate in the genus Stentor, seen here contracting among debris. Darkfield illumination. Magnification 25x at 35mm.

Light micrograph of an earthworm's seminal vesicle showing the parasite Monocystis lumbrici, a large apicomplexan in the taxon Gregarinea. Magnificati...

Light micrograph of Dileptus anser, cilia visible; magnification 60X at 2x2" image size.

Light micrograph showing the parasitic protozoa Plasmodium malariae, which causes malaria in humans; mature schizoni. Magnification 1000x at 35mm.

Light Micrograph (LM) showing Pneumocystis jirovecii (formerly known as P. carinii), seen here as golden spheres. Pneumocystis jirovecii is a yeast-li...

Light micrograph (LM) showing the internal protozoan parasite species Isospora belli, responsible for the condition isosporiasis. Immunocompromised pa...

Light Micrograph (LM) showing Pneumocystis jirovecii (formerly known as P. carinii), spores growing in human lung. Pneumocystis jirovecii is a yeast-l...

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

Light micrograph (LM) showing the internal protozoan parasite species Isospora belli, responsible for the condition isosporiasis. Immunocompromised pa...

Light Micrograph (LM) showing Pneumocystis jirovecii (formerly known as P. carinii), spores growing in human lung. Pneumocystis jirovecii is a yeast-l...

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

Light Micrograph (LM) showing Pneumocystis jirovecii (formerly known as P. carinii), cysts in human lung. Pneumocystis jirovecii is a yeast-like fungu...

Light Micrograph (LM) showing Pneumocystis jirovecii (formerly known as P. carinii), seen here as golden spheres. Pneumocystis jirovecii is a yeast-li...

Light micrograph of the ciliate prozoan Tetrahymena pyriformis, living, unstained. Nomarski Contrast. Magnification 200x at 35mm.

Micrograph of germination spores on dryopteris fern using Rheinberg Illumination. Magnification x12.8 @ 35mm.

Light micrograph of (LM) Amoeba proteus, living specimen, showing nucleus; Nomarski differential interference contrast (DIC), magnification 170x at 35...

Light micrograph of Numulitic foraminiferans in limestone from an Egyptian pyramid, magnification 4x at 35mm.

Light micrograph (LM) showing fossilized Foraminiferans from the top of the Cretaceous (Gubbio layer, i.e. K-T boundary, Italy). Magnification 160x at...

Light micrograph (LM) showing fossilized Foraminiferans from the top of the Cretaceous (Gubbio layer, i.e. K-T boundary, Italy). Magnification 160x at...

Schematic illustration of a brain stem with neurons shown in light blue, locus coeruleus cells in green, and giant cells in purple.

Snowflakes. Color enhanced snowflake from resin cast.

Snowflake. Color enhanced snowflake from resin cast.

Snowflakes preserved in plastic.

Snowflake.

Snowflakes. Nomarski optics.

Light micrograph showing the parasitic protozoan Entamoeba histolytica in colon of patient; H&E stain, magnification unknown.