Homophilic interaction: adhesion between two copies of the same adhesion molecule.

Heterophilic interaction: binding between an adhesion protein and some other molecule.

See Adhesion molecules, Alzheimer’s disease, Cadherins, Cell, Cell recognition molecules, Growth cone, Immunoglobins, Lamillipodia, Ligands, Morphogenesis, Mucins, Mutation (biology), Neural cell adhesion molecule (N-CAM), Neurite, Oligosaccharides, Selectins, Semaphorins, Synapse