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Un soarece caruia nu ii este frica de pisici: a fost creat de Hitoshi Sakano, Ko Kobayakawa si alti specialisti in neurologie de la Universitatea din Tokio au creat soarecele caruia nu ii este frica de pisici in cadrul unui studiu asupra simtului olfactiv si a comportamentului. Ei au reusit sa le “anihileze” soarecilor, gratie ingineriei genetice, anumite celule olfactive responsabile de aversiunea sau atractia innascuta fata de anumite mirosuri.
Rozatoarele create de Sakano si colegii sai sunt lipsite de neuronii olfactivi numiti Delta-D. Astfel modificati, acesti soricei percep mirosurile, dar spre deosebire de confratii lor, nu fug din fata stimulilor olfactivi care indica pericol in apropiere (mirosul de pisica sau de vulpe).
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