Extracellular signals are relayed to the cell’s interior by second messengers such as cyclic AMP (cAMP), which was once thought to diffuse freely throughout the cytoplasm. Yet cAMP has also become ...

Launch GIMP and select Windows > Dockable Dialogs > Gradients. A Gradients window will show up in the upper right corner. The window lists all the gradients that come pre-installed with GIMP. To ...

Black and white images do not have to be dull and lifeless. There are no colors but they can still look sharp and smooth. Black and white can be just that, black and white. There is also the high ...

Few would deny the classic beauty of a grayscale (black and white) photo. Many ordinary pictures can be rendered more elegant simply by removing their colors, but none more so than portraits. Amidst ...

Surgery Linked to Cardiac Death in Cancer Patients Use of low-voltage mapping appears to be safe and effective for guiding ablation in pediatric patients with atrioventricular nodal reentry ...

Sitting quietly in the Tools panel of the popular image editors Adobe Photoshop, Photoshop Elements, and Pixelmator, is the Gradient tool, a wonderfully useful painting tool that lets you create a ...