test
node1
GO:0009987
cellular process
node2
GO:0008219
cell death
node1->node2
node6
GO:0012501
programmed cell death
node2->node6
node3
BFO:0000003
occurrent
node3->node3
node4
BFO:0000015
process
node3->node4
node5
GO:0008150
biological_process
node4->node5
node5->node1
node7
GO:0006915
apoptotic process
node6->node7
node8
GO:1904019
epithelial cell
apoptotic process
node7->node8
node9
GO:0097283
keratinocyte
apoptotic process
node8->node9
node10
BFO:0000001
entity
node10->node3