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. 2017 Feb 13;12(2):e0171839. doi: 10.1371/journal.pone.0171839

Table 2. The number of drugs, target proteins, interactions and updated interactions of each type.

N 1 2 3 4 5 6 7 8 9 10
Enzymes 0 1.3 4.1 7.7 12.6 17.8 20.3 24 28.6 30.9
Ion channels 0 1.6 2.9 4 6.4 7.5 10.7 11.8 13.8 15.9
GPCRs 0 1.9 3.8 5.9 8 9.9 11.6 14.2 16.1 17.2
Nuclear receptors 0 1.5 3.7 5 7.6 9.4 9.6 11.9 11.8 12.7