E.g. into plants such as http://en.wikipedia.org/wiki/Dicotyledon
http://en.wikipedia.org/wiki/Rhizobia
http://en.wikipedia.org/wiki/Prenylation
http://en.wikipedia.org/wiki/Calmodulin
http://en.wikipedia.org/wiki/T_cell
http://en.wikipedia.org/wiki/Indole_alkaloid
http://en.wikipedia.org/wiki/Purine_metabolism#Biosynthesis
http://en.wikipedia.org/wiki/Tumor_antigen
http://en.wikipedia.org/wiki/Infection
http://en.wikipedia.org/wiki/Transfer_DNA
e.g. transplantation antigens
e.g. http://en.wikipedia.org/wiki/Continuous_noninvasive_arterial_pressure
Delivery systems for active ingredients
Transplantation of cells
Disease resistant crops; http://en.wikipedia.org/wiki/Plant_disease_resistance