02020  Two-component system
     04010  MAPK signaling pathway
     04013  MAPK signaling pathway - fly
     04011  MAPK signaling pathway - yeast
     04012  ErbB signaling pathway
     04310  Wnt signaling pathway
     04330  Notch signaling pathway
     04340  Hedgehog signaling pathway
     04350  TGF-beta signaling pathway
     04390  Hippo signaling pathway
     04391  Hippo signaling pathway - fly
     04370  VEGF signaling pathway
     04630  Jak-STAT signaling pathway
     04064  NF-kappa B signaling pathway
     04668  TNF signaling pathway
     04066  HIF-1 signaling pathway
     04020  Calcium signaling pathway
     04070  Phosphatidylinositol signaling system
     04151  PI3K-Akt signaling pathway
     04150  mTOR signaling pathway
     04075  Plant hormone signal transduction