Science Source Feb 2010

A SEM of a mouse lung, showing a pulmonary vein; x220 magnification.

A SEM of a mouse lung, showing a bronchiole.

A SEM of a mouse lung, showing a bronchiole.

A SEM of a mouse liver, showing bile canaliculi; x410 magnification at 4x4 inches.

A SEM of a mouse liver, showing bile canaliculi; x720 magnification at 4x4 inches.

A SEM of human hair; x45 magnification at 4x4 inches.

A SEM of human hair; x375 magnification at 4x4 inches.

A SEM of a mouse liver, showing bile canaliculi; x410 magnification at 4x4 inches.

A SEM of human hair; x375 magnification at 4x4 inches.

A SEM of human hair; x375 magnification at 4x4 inches.

A SEM of human hair; x375 magnification at 4x4 inches.

A SEM of human hair.

Crystals of idovudine, (INN), or azidothymidine, (AZT), (also called ZDV), is an antiretroviral drug, the first approved for treatment of HIV. It is a...

American White cheese prepared by a continuous process by coagulating milk at pH 5.5. These conditions resulted in producing a unique 'core-and-shell'...

American White cheese prepared by a continuous process by coagulating milk at pH 5.5. These conditions resulted in producing a unique 'core-and-shell'...

American White cheese prepared by a continuous process by coagulating milk at pH 5.5. These conditions resulted in producing a unique 'core-and-shell'...

Human platelets, (orange to purple), interacting with Staphylococus epidermidis bacteria, (blue), in a contaminated transfusion bag. These complexes m...

Human platelets, (orange to purple), interacting with Staphylococus epidermidis bacteria, (blue), in a contaminated transfusion bag. These complexes m...

Sweet potatoes, (Ipomoea batatas), are sweet-fleshed, pointy-ended starchy tubers in the Convolvulaceae family. Native to the New World, sweet potatoe...

Sweet potatoes, (Ipomoea batatas), are sweet-fleshed, pointy-ended starchy tubers in the Convolvulaceae family. Native to the New World, sweet potatoe...

Sweet potatoes, (Ipomoea batatas), are sweet-fleshed, pointy-ended starchy tubers in the Convolvulaceae family. Native to the New World, sweet potatoe...

Sweet potatoes, (Ipomoea batatas), are sweet-fleshed, pointy-ended starchy tubers in the Convolvulaceae family. Native to the New World, sweet potatoe...

Scanning electron microscope image of a staghorn fern leaf, (Platycerium holtummii), magnified 1000x. Staghorn ferns are epiphytic perennials or 'air'...

Scanning electron microscope image of a staghorn fern leaf, (Platycerium holtummii), magnified 1000x. Staghorn ferns are epiphytic perennials or 'air'...

Scanning electron microscope image of a staghorn fern leaf, (Platycerium holtummii), magnified 1000x. Staghorn ferns are epiphytic perennials or 'air'...

Ophiocytium Algal Colony; Cells of the yellow-green alga Ophiocytium. These cells can exist singly or, as shown here, in in dendroidal, colony-like cl...

Becke's lines around a crystal of sodium chloride in polarized light. The white line surrounding the crystal faces shows that the refractive index of...

Two cytotoxic T-cells attack a single cancer cell. T-cells are lymphocytes originating in the thymus. They come in a variety of types and play a role...

Hepatitis C viruses floating in a microscopic space.

This artwork illustrates how neurons in the brain signal each other amid a network of blood vessels and star-shaped support cells. The mists of color...

In 2006, scientists developed an optical microscopy technique enabling them to clearly see individual molecules within cells. Now, they've taken the t...

The scientific team from the University of Wisconsin-Madison created genetic modifications in skin cells (above) to induce the cells into what scienti...

The scientific team from the University of Wisconsin-Madison created genetic modifications in skin cells (above) to induce the cells into what scienti...

Light micrograph of ulothrix algae.

Transmission Electron Micrograph, (TEM), of smallpox viruses.

Transmission Electron Micrograph, (TEM), of type A influenza viruses.

Transmission Electron Micrograph, (TEM), of a cell containing variola, (smallpox), viruses.

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This transmission electron micrograph (TEM) depicted a number of Nipah virus virions that had been isolated from a patient's cerebrospinal fluid (CSF)...

This is a transmission electron micrograph of a Nipah virus nucleocapsid isolate magnified 168,000 times. This virus, Paramyxovirinae, is a subfamily...