Seaside, Oregon - Stump of Spruce Giant Still Popular. America's Largest Sitka Spruce Stump: Along the Oregon coast stood America's largest Sitka spruce, a tourist stop for years among people who like to look at big trees. [09/11/2008] Complete Story...
Bacteriophages occur abundantly in the biosphere, with different virions, genomes and lifestyles. Phages are classified by the International Committee on Taxonomy of Viruses (ICTV) according to morphology and nucleic acid.acteriophages are composed of proteins that encapsulate a DNA or RNA genome, and may have relatively simple or elaborate structures. Their genomes may encode as few as four genes, and as many as hundreds of genes. Phages replicate within the bacterium following the injection of their genome into its cytoplasm.
Macrophages are important cells of the immune system that are formed in response to an infection or accumulating damaged or dead cells. Macrophages are large, specialized cells that recognize, engulf and destroy target cells. The term macrophage is formed by the combination of the Greek terms makro meaning big and phagein meaning eat.