What is the difference between Antigen and Antibody?
Antigen- Protein markers on the outside of cells that identify what type of cell it is (i.e. Antigens that are recognized as dangerous or Antigens that are unrecognized most likely trigger an immune response)
Antibody- Your body makes antibodies to fight things it considers dangerous. An antibody is a small protein (aka Immunoglobulins) floats around by itself unless they attach to antigens. They identify antigens so it can be killed by the T killer cells, complement proteins, or leukocytes (aka mast cells, eosinophils, basophils, neutrophils, macrophages, dendritic cells, and monocytes)