I am working on MCF-7 cells...whenever i revive the cells they get attached and for the first two days their morphology is very good..(edges glow when u view under microscope and cells seem great just like ATCC morphology)...but on 3rd day cells start detaching and by 4th and 5th day all the cells detach and die..I have tried almost everything like reducing the trypsinization time and centrifuging speeds to reduce the damage to cells...but its not helping... Also if someone has a good stock of MCF-7 cells please send it to me. That would be very kind of you..My whole works depend on these cells and i cant manage to find a good stock...Please hepl...Thanks!!