A web service differs from a web site in that a web service provides information consumable by software rather than humans. As a result, we are usually talking about exposed JSON, XML, or SOAP services. Web services are a key component in mashups.
Leukopenia is a shortage of white blood cells in the system, which can be caused by anemia, menorrhagia, etc. A low white blood cell count, or leukopenia will have a direct effect on your body's immune system. White blood cells are used to fight off infections within the blood stream. Without an adequate number of white blood cells your body will have trouble ridding itself of bacteria or viral matter which can cause disease.
Autoimmune disorders that destroy white blood cells or bone marrow cells; Severe infections that use up white blood cells faster than they can be produced; Medications, such as antibiotics, that destroy white blood cells; Sarcoidosis; Specific causes of a low white blood cell count include: Aplastic anemia. Chemotherapy. Radiation therapy. HIV/AIDS. Hypersplenism â a premature destruction of blood cells by the spleen. Tuberculosis (and other infectious diseases) Kostmann's syndrome â a congenital disorder involving low production of neutrophils.