problems using ImageJ!!

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Gina
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problems using ImageJ!!

So I need to quantify the intensity of fluorescence of an integrin staining I did with Cy2 conjugated Ab to the specific mAB....I was told to use Image J...problem is I cannot figure out the program for the life of me. I imported my pictures but then, I'm trying to select only the fluorescent areas and I don't know how. Even if I figure that out, how do I actually quantify intensity?? Help!!!