How do I label only a subset of frames in a stack?

Hello all,

I am new to using ImageJ, and I am working with a video stack of bacteria images (say 60 images). At a certain point in this experiment, the bacteria are exposed to an antibiotic (at frame 20), and I would like to apply a label to the stack at this exposure point and for the remainder of the experiment. So far, I have only been able to label the entire stack, which is not what I want.

Thank you!

The Stack Labeler (Image > Stacks > Label…) has a Range field where you can specify the slices to label. That should do what you want.

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Awesome, thank you so much!!