Samsung Galaxy Ace 4 smartphone with 4.00-inch 480x800 display powered by 1GHz processor alongside 512MB RAM and 5-megapixel rear camera.
Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.
The carcinoembryonic antigen (CEA) test may be used: 1  To monitor the treatment of people diagnosed with colon cancer. It may also be used as a marker for medullary thyroid cancer and cancers of the rectum, lung, breast, liver, pancreas, stomach, and ovaries.