It's supposed to have
red blood cells which transport oxygen, and white blood cells which come in all of the following different shapes and sizes:Macrophages:
These swallow bacteria and harmful agents.Alveolar macrophages:
These are in the lungs where respiratory viruses have a strong affinity.Lymphocytes
(B cells and T cells): The T cells are specially good at fighting viral infections and coordinating the attack. Your B cells make antibodies to protect you from repeated infection.Neutrophils:
First on the scene! Also called ganulocytes because they dump granules out to kill invaders.
These are all normal components of your blood stream.