test
node1
GO:0050801
monoatomic ion
homeostasis
node2
GO:0055080
monoatomic cation
homeostasis
node1->node2
node9
GO:0055078
sodium ion
homeostasis
node2->node9
node3
GO:0048878
chemical homeostasis
node3->node1
node4
GO:0098771
inorganic ion
homeostasis
node3->node4
node4->node9
node5
GO:0003008
system process
node6
GO:0003014
renal system process
node5->node6
node14
GO:0007588
excretion
node5->node14
node15
GO:0097254
renal tubular
secretion
node6->node15
node7
GO:0008150
biological_process
node8
GO:0032501
multicellular
organismal process
node7->node8
node11
GO:0042592
homeostatic process
node7->node11
node8->node5
node10
GO:0035812
renal sodium
excretion
node9->node10
node11->node3
node12
BFO:0000003
occurrent
node12->node12
node13
BFO:0000015
process
node12->node13
node13->node7
node14->node15
node15->node10
node16
BFO:0000001
entity
node16->node12