So they can breatheso they can breatheso they can breathe<span>so they can breathe
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Limestone is composed largely of the minerals calcite or aragonite. Some limestones do not consist of grains and are formed by the chemical precipitation of calcite or aragonite. This is how limestone can be classified as chemical.
2. Cell (Plasma) membrane
4. A cell membrane is made of phospholipids, is flexible, and is found in animal cells. A cell wall is made of cellulose, is rigid, and is found in plant cells.
Sarcoidosis can<span> easily be </span>mistaken for other systemic and especially metastatic disease.
Metastatic disease is w<span>hen many cancer cells are found in one or more nearby lymph nodes, it is known as regional </span>disease<span> or stage III cancer. Cancer cells can travel to lymph nodes far from the primary tumor or to other organs or tissues in the body, where they collect to form a </span>metastatic<span> tumor.</span>
