test
node1
GO:0006955
immune response
node2
GO:0002251
organ or tissue
specific immune
response
node1->node2
node3
GO:0050896
response to stimulus
node3->node1
node4
BFO:0000001
entity
node5
BFO:0000003
occurrent
node4->node5
node5->node5
node7
BFO:0000015
process
node5->node7
node6
GO:0002376
immune system process
node6->node1
node8
GO:0008150
biological_process
node7->node8
node8->node3
node8->node6