Create a figure showing intrinsic and extrinsic apoptosis pathways in parallel: extrinsic pathway with Fas/FasL and TNF/TNFR1, FADD recruitment, caspase-8 activation; intrinsic pathway with cellular stress, BAX/BAK oligomerization, mitochondrial outer membrane permeabilization, cytochrome c release, apoptosome (APAF-1/caspase-9) formation. Show convergence at caspase-3/7 executioner caspases, ICAD cleavage, DNA fragmentation. Include Bcl-2, Bcl-xL, BID, and XIAP regulatory nodes.
