▁set ▁of ▁samples , ▁or ▁when ▁long - term ▁storage ▁of ▁part ▁of ▁the ▁sample ▁is ▁desired . ▁Cry oh om ogen ization ▁can ▁be ▁carried ▁out ▁using ▁a ▁super co o led ▁mort ar ▁and ▁p est le ▁( class ic ▁approach ), ▁or ▁the ▁t issue ▁can ▁be ▁hom ogen ized ▁by ▁cr ushing ▁it ▁into ▁a ▁fine ▁pow der ▁inside ▁a ▁clean ▁pl astic ▁bag ▁rest ing ▁against ▁a ▁super co o led ▁solid ▁metal ▁block ▁( more ▁recently ▁developed ▁and ▁more ▁efficient ▁technique ). ▁ ▁High - press ure ▁hom ogen ization ▁is ▁used ▁to ▁isol ate ▁the ▁contents ▁of ▁Gram - pos itive ▁b acter ia , ▁since ▁these ▁cells ▁are ▁exception ally ▁resist ant ▁to ▁l ysis , ▁and ▁may ▁be ▁combined ▁with ▁high - temper ature ▁ster il ization . ▁ ▁D ounce ▁hom ogen ization ▁is ▁a ▁technique ▁suitable ▁for ▁soft ▁m amm al ian ▁t issues , ▁while ▁l ysis ▁of ▁m amm al ian ▁cells ▁has ▁also ▁been ▁demonstrated ▁via ▁cent rif ug ation ▁. ▁ ▁References ▁ ▁Category : Cell ▁an atom y ▁Category : Cell ▁bi ology ▁Category : L abor atory ▁techniques <0x0A> </s> ▁Alberto ▁Vis cont i ▁( born ▁ 1 9 0 1 , ▁date ▁of ▁death ▁unknown ) ▁was ▁an ▁Italian ▁b obs led der . ▁He ▁competed ▁in ▁the ▁four - man ▁event ▁at ▁the ▁ 1 9 2 4 ▁Winter ▁Olympics . ▁ ▁References ▁ ▁Category : 1 9 0 1 ▁birth s ▁Category :