test
node1
GO:0110165
cellular anatomical
entity
node2
GO:0043676
tectum
node1->node2
node3
GO:0071944
cell periphery
node1->node3
node4
GO:0030312
external
encapsulating
structure
node1->node4
node5
GO:0043668
exine
node1->node5
node8
GO:0043673
sexine
node1->node8
node3->node4
node6
GO:0043667
pollen wall
node4->node6
node5->node8
node6->node5
node7
GO:0005575
cellular_component
node7->node1
node8->node2