This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pituitary, Subject name: Physiology
In diseases of growth hormone cell death occurs by- 
Select and explain. 
A. Aging, B. Apoptosis, C. Necrosis, D. All of the above
B: Apoptosis
Answer: B: Apoptosis 
Explanation: Ans. is 'b' i.e., Apoptosis o GH and IGF-1 (somatomedin) inhibit cell death by apoptosiso Thus, GH deficiency will cause accelerated apoptosis."GH indirectly mediates growth and protein synthesis by triggering the liver and other tissues to produce a group of proteins called insulin-like growth factors (IGFs). These proteins enahnce cellular proliferation and inhibit apoptosis or programmed cell death " -- Science in medicine.