Which of the following statements about paracrine substancesis correct? A.) Paracrine substances act on nearby tissues without firstentering the blood B.) Paracrine substances are inactivated quickly; theireffects are short-lived C.) Interleukin-2 (IL-2) is an example of a paracrinesubstance D.) A and B are correct E.) A, B, and C are correct Which of the following statements about paracrine substancesis correct? A.) Paracrine substances act on nearby tissues without firstentering the blood B.) Paracrine substances are inactivated quickly; theireffects are short-lived C.) Interleukin-2 (IL-2) is an example of a paracrinesubstance D.) A and B are correct E.) A, B, and C are correct
Explanation / Answer
The answer is E. A,B and C are correct. Paracrine substances are those substances which act on nearbytissues.But they are short lived. They are produced by cells in a localized area and exert theireffect on the surrounding cells. Interleukin -2 is produced by cells of the immune system andstimulates the division of T lymphocytes and other functions