Which of the following is an extracellular messenger of apoptosis?(a) serine(b) tumor necrosis factor(c) ribozyme(d) translation inhibitorI have been asked this question in an interview for job.My question is based upon Cell Signaling and Signal Transduction in division Cell Signaling and Signal Transduction of Cell Biology

Which of the following is an extracellular messenger of apoptosis?(a)

1.	Which of the following is an extracellular messenger of apoptosis?(a) serine(b) tumor necrosis factor(c) ribozyme(d) translation inhibitorI have been asked this question in an interview for job.My question is based upon Cell Signaling and Signal Transduction in division Cell Signaling and Signal Transduction of Cell Biology
Answer» The correct choice is (b) TUMOR necrosis FACTOR To elaborate: Tumor necrosis factor (TNF) is an extracellular messenger for the extrinsic pathway of apoptosis. It has the ability to ablate tumor cells and is SECRETED by the cells of immune system in RESPONSE to ADVERSE conditions.

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