How does a secretory cell function?

The term secretion basically meant the release of a useful substance by a gland or cell. While the secretory cells secrete collagen and other proteins that provide strength while holding the body. The secretory cell-like digestive enzymes, antibodies, and mucus. The most important function of the secretory cell from the endocrine gland is to form cell plasma membrane called porosomes.

materials water oxygen those are the things i can think of in this moment.

the truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey.