Bana caka-1980s, goɗɗi BioFETji ngaɗanooma, bana ko hawti hepta-gaswol FET (GASFET), hepta-ɓillaare FET (PRESSFET), doggina chemicaljam field-effect dogginorwol (ChemFET), daareteeɗum ISFET (REFET), enzyme-modified FET (ENFET) e dinɗaaɗumki mbo'itinaaɗum FET (IMFET).