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Briefly, actively proliferating cells were incubated with colchicines (0.1 lg/ml) for 4 h at 37 _C. The cells were washed twice with DPBS, trypsinized, suspended in a chilled hypotonic solution (68 mM KCl) and incubated for 20 min at 37 _C and then fixed for 10min in chilledfixative (methanol and glacial acetic acid, 3:1). The pellets were suspended in 5 ml of chilled fixative for another 10min. The metaphase spreads were prepared by dropping the cell suspension onto ice cold glass slides.
3 u. M+ e7 A6 `/ f( c9 P7 \& Y& q' y3 O: U) e
网上找的,我准备用这个方法试试。供分享! |
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