9 ▁N uz h na ▁li ▁nam ▁filosof ija ▁tek hn iki ? ▁( Do ▁we ▁need ▁philosophy ▁of ▁technology ?) ▁in ▁In zh ener ny j ▁tr ud ' ', ▁Vol . ▁ 2 , ▁No . ▁ 1 5 ▁January , ▁Moscow ▁ ▁References ▁ ▁Category : 1 8 5 5 ▁birth s ▁Category : 1 9 4 0 s ▁death s <0x0A> </s> ▁The ▁mi R - 1 2 4 ▁micro R NA ▁prec ursor ▁is ▁a ▁small ▁non - c oding ▁R NA ▁mole c ule ▁that ▁has ▁been ▁identified ▁in ▁f lies ▁( MI 0 0 0 0 3 7 3 ), ▁n emat ode ▁w orm s ▁( MI 0 0 0 0 3 0 2 ), ▁mouse ▁( MI 0 0 0 0 1 5 0 ) ▁and ▁human ▁( MI 0 0 0 0 4 4 3 ). ▁ ▁The ▁m ature ▁~ 2 1 ▁nucle ot ide ▁micro R N As ▁are ▁processed ▁from ▁hair pin ▁prec ursor ▁sequences ▁by ▁the ▁Dic er ▁en zym e , ▁and ▁in ▁this ▁case ▁origin ates ▁from ▁the ▁ 3 ' ▁arm . ▁mi R - 1 2 4 ▁has ▁been ▁found ▁to ▁be ▁the ▁most ▁abund ant ▁micro R NA ▁expressed ▁in ▁neur onal ▁cells . ▁Exper iments ▁to ▁alter ▁expression ▁of ▁mi R - 1 2 4 ▁in ▁neural ▁cells ▁did ▁not ▁appear ▁to ▁affect ▁different iation . ▁However ▁these ▁results ▁are ▁controvers ial ▁since ▁other ▁reports ▁have ▁described ▁a ▁role ▁for ▁mi R -