Kuyambitsa gawo la mankhwalawa kwa cell achita umboni pazaka khumi zapitazi, makamaka pakukulitsa ndi kugwiritsa ntchito forler wachilengedwe (NK). Ma cell amtunduwu, omwe amatenga mbali yofunika kwambiri mu chitetezo cha thupi,
Mu nthawi yonse - Dziko Lonse la Kuchotsa biotechnology, DNSMMID DNA yatuluka ngati wosewera wofunikira, makamaka m'malo ogulitsira a cell. Pomwe gulu la zamankhwala likupitiliza kukankhira malire a zomwe zingatheke, gawo la plasmid DNA pakukula