That is a $50 price cut for the PS4, which currently retails at $399. A contest hints at a PS4 price drop. In a screenshot we see the PS4 Approximate Retail Value (ARV) listed as $349. This value is typically the retail price of the device that a customer will pay in-store without any discounts.
Diseases of the White Blood Cells. 1  Neutropenia (pronounced: new-truh-PEE-nee-uh) occurs when there aren't enough of a certain type of white blood cell to protect the body against bacterial infections. 2  Human immunodeficiency virus (HIV) attacks certain types of white blood cells (lymphocytes) that work to fight infection.
Your white blood cells are the blood cells that fight infections and disease. Infections are caused by fungi, viruses and bacteria. You white blood cells produce these things â¦called antibodies which sort of eat up the microbes inside of your body. Microbes cause disease when they are able to reproduce in the body. They produce harmful substances called toxins, and damage tissues and organs.