“The centers are never in a good part of town, always somewhere they can get a never ending supply of poor people desperate for that hundred bucks a week. The people who show up are a mix of disabled, working poor, homeless, single parents, and college students.
One factor in blood type — A, B, AB or O — is hereditary and determined by the presence or absence of two antigens, A and B. Your blood type is determined together with a third antigen called Rh factor. Plasma, a mixture of water, protein, fat and salts, is responsible for transporting red blood cells throughout the body.1