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 The macrophage is one of the most important cells of the immune system. For many years it has been known as the main phagocyte of the immune system. Macrophages eat and destroy pathogens, such as bacteria, viruses and fungi, thus they are a critical part of the body's defense against microorganisms.acrophages are produced in the bone marrow, where red blood cells, platelets and granulocytes are made. In the bone marrow, macrophage precursor cells are called promonocytes. Promonocytes eventually mature and migrate into the blood, where they are called monocytes. Monocytes are only found in the blood.