test
node1
GO:0035295
tube development
node2
GO:0035050
embryonic heart tube
development
node1->node2
node3
GO:0032502
developmental process
node4
GO:0048856
anatomical structure
development
node3->node4
node4->node1
node7
GO:0007275
multicellular
organism development
node4->node7
node8
GO:0048731
system development
node4->node8
node13
GO:0009888
tissue development
node4->node13
node15
GO:0048513
animal organ
development
node4->node15
node5
GO:0009790
embryo development
node6
GO:0048568
embryonic organ
development
node5->node6
node6->node2
node7->node1
node7->node5
node7->node8
node17
GO:0072359
circulatory system
development
node8->node17
node9
GO:0032501
multicellular
organismal process
node9->node7
node10
GO:0008150
biological_process
node10->node3
node10->node9
node11
BFO:0000003
occurrent
node11->node11
node12
BFO:0000015
process
node11->node12
node12->node10
node18
GO:0060429
epithelium
development
node13->node18
node14
BFO:0000001
entity
node14->node11
node15->node6
node16
GO:0007507
heart development
node15->node16
node16->node2
node17->node16
node18->node2