Pi3K_AKT_graph          PI3K/AKT activation
Pi3K_graph              PI3K Cascade
RAF_MAP_graph           #' RAF/MAP kinase cascade
TGFBeta_Smad_graph      TGF-beta receptor signaling activates SMADs
generate_expression     Generate Simulated Expression
make_adjmatrix          Generate Adjacency Matrix
make_commonlink         Generate Common Link Matrix
make_distance_graph     Generate Distance Matrix
make_sigma              Generate Sigma Matrix
make_state_matrix       Make State Matrix
plot_directed           Extensions to iGraph for Customising plots
