Freelancing is not just a U.S. phenomenon, but is now spreading around the world. There are approximatly 53 million freelancers in the U.S. contributing $715 billion in earnings to the national economy. 80% of all workers in the U.S. surveyed said they would do work on the side if it came to them to earn extra money.
The Phagocytes. Phagocytes are the soldiers of the immune system, and provide innate immunity. They are responsible for swallowing, killing and digesting invading microbes. The process of swallowing microbes is known as phagocytosis.There are two main types of phagocyte. 1  Microphages. 2  These cells are also known as Polymorphonuclear Leucocytes, PMNs and Polymorphs. 3  These cells start life in the bone marrow. 4  They are constantly circulating in the blood.he process of swallowing microbes is known as phagocytosis. There are two main types of phagocyte. 1  Microphages. 2  These cells are also known as Polymorphonuclear Leucocytes, PMNs and Polymorphs. 3  These cells start life in the bone marrow.
Basic B cell function: bind an antigen, receive help from a cognate helper T cell, and differentiate into a plasma cell that secretes large amounts of antibody. B cells, also known as B lymphocytes, are a type of white blood cell of the lymphocyte subtype. They function in the humoral immunity component of the adaptive immune system by secreting antibodies.