Dear Flowers, I am attempting to measure apoptosis and necrosis within a population of vascular smooth muscle cells which have been isolated from a rat aorta.The cells were isolated by a 12hr collagenase/elastase digestion an then used immediately for a two colour annexin V vs PI experiment. The results are quite variable within the triplicates of each experiment , which is quite worrying. The conditions such as cell number incubation times etc. are the same for each experiment. Any suggestions to improve the variability?? Thanks James S. Clark PhD.
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