Signs and symptomsEdit. PCS has consistent characteristics. Its symptoms begin with a sudden onset of anterior chest pain on the left side of the chest. The pain is localized and does not radiate like heart attack pain typically does. Breathing in, and sometimes breathing out, often intensifies the pain. Moving also intensifies the pain.
It's in all the science books. Cells are the basic unit of structure and function of the human, animal, and any other living thing. The cells travel through carrying oxygen and everything else that your body, and brain, needs. Cells are a small unit just like a living matter.
cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals. animate thing, living thing-a living (or once living) entity.