Aggregation Dynamics Using Phase Wave Signals and Branching Patterns
  The aggregation dynamics of slime mold is studied using coupled equations of phase \phi and cell concentration n. Phase waves work as tactic signals for aggregation. Branching structures appear during the aggregation. A stationary branching pattern appears like a river network, if cells are uniformly supplied into the system. 
Hidetsugu Sakaguchi and Takuma Kusagaki
nlin.PS cond-mat.soft q-bio.CB