Flow cytometry (FCM) allows the simultaneous measurement of different
parameters in a population of cell or sub-cellular particles, which ar
e individually analysed at a rare of 500 to 5 000 objects/second. Resu
lts are displayed as univariate or bivariate histograms, giving the di
stribution of the population in relation to the studied parameters. Mo
reover, FCM offers the possibility to physically sort the sub populati
ons defined by the analysis.