Science Source Feb 2010

Scanning electron micrograph (SEM) of methicillin-resistant Staphylococcus aureus bacteria (MRSA); magnification 2363x. This strain of Gram-positive b...

Scanning electron micrograph (SEM) of methicillin-resistant Staphylococcus aureus bacteria (MRSA); magnification 2363x. This strain of Gram-positive b...

Transmission Electron Micrograph (TEM) of Spanish flu virus. This Influenza virus type a, strain H1N1 is very close to the avian flu virus (strain H5N...

Transmission Electron Micrograph (TEM) of Spanish flu virus. This Influenza virus type a, strain H1N1 is very close to the avian flu virus (strain H5N...

Transmission Electron Micrograph (TEM) of Spanish flu virus. This Influenza virus type a, strain H1N1 is very close to the avian flu virus (strain H5N...

Transmission Electron Micrograph (TEM) of a cluster of polio virus particles. Each particle is composed of a protein coat (capsid) around a core conta...

Transmission Electron Micrograph (TEM) of a cluster of polio virus particles. Each particle is composed of a protein coat (capsid) around a core conta...

Transmission Electron Micrograph (TEM) of a cluster of polio virus particles. Each particle is composed of a protein coat (capsid) around a core conta...

Scanning electron micrograph (SEM) of Escherichia coli bacterium, magnification 6836x. E. coli are rod-shaped Gram-negative bacteria that normally col...

Scanning electron micrograph (SEM) of Escherichia coli bacterium, magnification 6836x. E. coli are rod-shaped Gram-negative bacteria that normally col...

Scanning electron micrograph (SEM) of Escherichia coli bacterium, magnification 6836x. E. coli are rod-shaped Gram-negative bacteria that normally col...

Transmission Electron Micrograph (TEM) of the Ebola virus, an RNA virus (filovirus) causing hemorrhagic fever.

Transmission Electron Micrograph (TEM) of the Ebola virus, an RNA virus (filovirus) causing hemorrhagic fever.

Transmission Electron Micrograph (TEM) of the Ebola virus, an RNA virus (filovirus) causing hemorrhagic fever.

This negative stained transmission electron micrograph (TEM) shows recreated 1918 influenza virions that were collected from the supernatant of a 1918...

This negative stained transmission electron micrograph (TEM) shows recreated 1918 influenza virions that were collected from the supernatant of a 1918...

This negative stained transmission electron micrograph (TEM) shows recreated 1918 influenza virions that were collected from the supernatant of a 1918...

This negative stained transmission electron micrograph (TEM) shows recreated 1918 influenza virions that were collected from the supernatant of a 1918...

This transmission electron micrograph (TEM) of an ultra-thin specimen revealed some of the ultrastructural morphologic features seen in 1918 influenza...

This transmission electron micrograph (TEM) of an ultra-thin specimen revealed some of the ultrastructural morphologic features seen in 1918 influenza...

This transmission electron micrograph (TEM) of an ultra-thin specimen revealed some of the ultrastructural morphologic features seen in 1918 influenza...

This transmission electron micrograph (TEM) of an ultra-thin specimen revealed some of the ultrastructural morphologic features seen in 1918 influenza...

This thin section transmission electron micrograph (TEM) depicts the ultrastructural details displayed by a number of Gram-positive Mycobacterium tube...

This thin section transmission electron micrograph (TEM) depicts the ultrastructural details displayed by a number of Gram-positive Mycobacterium tube...

This thin section transmission electron micrograph (TEM) depicts the ultrastructural details displayed by a number of Gram-positive Mycobacterium tube...

This scanning electron micrograph (SEM) reveals some of the external ultrastructural details displayed by a flagellated Giardia lamblia protozoan para...

This scanning electron micrograph (SEM) reveals some of the external ultrastructural details displayed by a flagellated Giardia lamblia protozoan para...

This scanning electron micrograph (SEM) reveals some of the external ultrastructural details displayed by a flagellated Giardia lamblia protozoan para...

This scanning electron micrograph (SEM) reveals some of the external ultrastructural details displayed by a flagellated Giardia lamblia protozoan para...

This is one of several scanning electron micrographic (SEM) images successively magnified at higher and higher values, which focuse on the head region...

This is one of several scanning electron micrographic (SEM) images successively magnified at higher and higher values, which focuse on the head region...

This is one of several scanning electron micrographic (SEM) images successively magnified at higher and higher values, which focuse on the head region...

Phase-contrast photomicrograph of a mating bacteria. Two mating complexes can be seen. The Hfr cells are elongated; the F cells spherical. With large...

Phase-contrast photomicrograph of a mating bacteria. Two mating complexes can be seen. The Hfr cells are elongated; the F cells spherical. With large...

Phase-contrast photomicrograph of a mating bacteria. Two mating complexes can be seen. The Hfr cells are elongated; the F cells spherical. With large...

Phase-contrast photomicrograph of a mating bacteria. Two mating complexes can be seen. The Hfr cells are elongated; the F cells spherical. With large...

Nervous tissue. Micrograph of myelinated and unmyelinated axons.

Nervous tissue. Micrograph of myelinated and unmyelinated axons.

Nervous tissue. Micrograph of myelinated and unmyelinated axons.

Transmission electron micrograph of two viral DNA rings. Length two microns.

Transmission electron micrograph of two viral DNA rings. Length two microns.

Transmission electron micrograph of two viral DNA rings. Length two microns.

Transmission electron micrograph of two viral DNA rings. Length two microns.

A snowflake (positive) photographed by Wilson A. Bentley (1865 - 1931) on a glass plate, who was probably the first person to do so. He used a box cam...

A snowflake (negative) photographed by Wilson A. Bentley (1865 - 1931) on a glass plate, who was probably the first person to do so. He used a box cam...

A snowflake (positive) photographed by Wilson A. Bentley (1865 - 1931) on a glass plate, who was probably the first person to do so. He used a box cam...

A snowflake (negative) photographed by Wilson A. Bentley (1865 - 1931) on a glass plate, who was probably the first person to do so. He used a box cam...

A snowflake (positive) photographed by Wilson A. Bentley (1865 - 1931) on a glass plate, who was probably the first person to do so. He used a box cam...

A snowflake (negative) photographed by Wilson A. Bentley (1865 - 1931) on a glass plate, who was probably the first person to do so. He used a box cam...

A snowflake (negative) photographed by Wilson A. Bentley (1865 - 1931) on a glass plate, who was probably the first person to do so. He used a box cam...