Although the absolute level of tumor marker did not correlate with prognosis, a normal value indicated an improved survival. CEA was elevated in 35.2 % of 110 patients determined to have recurrent disease and CA 19-9 was elevated in 62.9 %. At least one of the tumor markers was elevated in 68.2 % of patients.
Cell Membrane In BOTH types of cells. Controls what goes in and out of the cell. Chloroplast In a PLANT CELL. Captures energy from sunlight. Uses energy to produce cell food, which is sugar. Process called photosynthesis. Cytoplasm In BOTH types of cells. Houses gel-like fluids that support cell organelles. Endoplasmic Reticulum In BOTH types of cells.
All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike prokaryotes, eukaryotic cells also possess internal membranes that encase their organelles and control the exchange of essential cell components.