Memory cells don't undergo apoptosis due to the presence of which growth factor?: (A) Platelet derived growth factor, (B) Nerve growth factor, (C) Insulin like growth factor, (D) Fibroblast growth factor
Answer is B. Nerve growth factor was the first identified protein with anti-apoptotic activity on neurons. This prototypic neurotrophic factor, together with the three structurally and functionally related growth factor. Hence nerve cells don&;t undergo apoptosis.