test
node1
GO:0005886
plasma membrane
node2
GO:0042383
sarcolemma
node1->node2
node4
GO:0030315
T-tubule
node2->node4
node3
GO:0110165
cellular anatomical
entity
node3->node4
node5
GO:0016020
membrane
node3->node5
node7
GO:0071944
cell periphery
node3->node7
node5->node1
node6
GO:0005575
cellular_component
node6->node3
node7->node1