pathway object for pathway hsa04020.An object of class pathway for the pathway with KEGG
identifier hsa04020.
data(hsa04020)A pathway object including 180 genes.
KEGG identifier of the example pathways
gives the quadratic adjacency matrix for the pathway and with
that the network topology. Matrix dimensions equal the number of genes in the
pathway
includes a vector of signs to distinguish activations and
inhibitions in the adjacency matrix