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 the type of white blood cells that eat harmful molecules by engulfing them. Macrophages detect the invading substances by special antigens that harmful microbes carry on their surface. Macrophages destroy most of the microbe, except for these antigens, which they deliver to lymph nodes.