O le fa'ainisinia fa'ainisinia o le totonugalemu lea o le bioengineering fa'aonaponei. Inisinia fa'ainisinia (po'o fa'ainisinia fa'ainisinia, gene recombination technology) o le tipiina ma tu'ufa'atasia kenera o meaola eseese i vitro, fa'afeso'ota'i i latou i le DNA o vectors (plasmids, phages, viruses), ona fa'aliliuina lea i totonu o microorganisms po'o sela mo le fa'aputuina, ina ia mafai ona faʻaalia le kenera faʻafeiloaʻi i sela poʻo microorganisms e maua ai polotini manaʻomia. E sili atu i le 60% o mea na ausia e le biotechnology o loʻo faʻatumauina i le falemaʻi vailaʻau e atiaʻe ai vailaʻau fou faʻapitoa poʻo le faʻaleleia o vailaʻau faʻaleaganuʻu, lea na taʻitaʻia ai suiga tetele i le falemaʻi ma le televave o le atinaʻeina o biopharmaceuticals. Biopharmaceutical o le faʻagasologa o le faʻaogaina o tekonolosi bioengineering i le matata o le gaosiga o vailaʻau, o le mea sili ona taua o le inisinia faʻainisinia. O lona uiga o le tipi, fa'aofi, fa'afeso'ota'i ma toe tu'ufa'atasia le DNA e ala i le fa'aogaina o tekonolosi fa'a-cloning ma fa'aleaganu'u tu'uaga, ina ia maua ai mea fa'asoifua maloloina. O vailaʻau faʻaola o vailaʻau faʻapitoa e faʻaogaina faʻaola ua saunia ma microorganisms, parasites, manu toxin ma biological tissues e avea ma mea amata, faʻaogaina o meaola faʻasolosolo poʻo le vavaeeseina ma le faʻamamaina o tekonolosi, ma le faʻaogaina o tekinolosi faʻaola ma auʻiliʻili e pulea ai le lelei o oloa vaeluaga ma oloa maeʻa, e aofia ai tui, toxins, toxoids, serum, toto oloa, sauniuniga puipuia, cytokines, antigens Monoclonal antibodies ma genetic engineering products (DNA recombination products, in vitro diagnostic reagents), ma isi. Biological drugs ua atiaʻe ma ulu atu i le tulaga o le falemaʻi e mafai ona vaevaeina. i ni vaega se tolu e tusa ai ma o latou fa'aoga eseese: vaila'au fa'ainisinia fa'aineine, tui fa'aola ma vaila'au su'esu'e. O nei oloa o loʻo faʻateleina le sao taua i le suʻesuʻeina, puipuia, pulea ma e oʻo lava i le tapeina o faʻamaʻi pipisi ma puipuia le soifua maloloina o tagata.