Cytokines

(General comment) Chemotaxis, singal transduction, inflammation

 Chemokines

(General comment) Chemokine presentation, transcellular transport, signal transduction

 Adhesion molecules of cell surface

(General comment) Cell attachment, inflammation, transition

 Morphogens

(General comment) Effective diffusion, tissue differentiation, development

 Growth factors/receptors

(General comment) Ligand-receptor clustering and signaling, cell migration, mitogenesis

 Extracellular matrix molecules

(General comment) Storage depot, cell adhesion and motility, ECM/barrier formation

 Coagulation and fibrinolysis

(General comment) Coagulation, inflammation, complement control

 Enzymes

(General comment) Variety

 Microbial pathogens

(General comment) Adhesion of microorganism to host cells