Set of methods to visualize certain properties (structure, gene expression, potential changes, etc.) of organisms or single cells.

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Hoechst red and blue spectra - what does the red emission tell us?

I understand that the blue spectrum is emitted when Hoechst 33342 binds to nuclear DNA. But what exactly is the red spectrum telling us? I read that the red spectrum can be indicative of apoptosis, ...
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How are new staining protocols designed for microscopy?

How are new staining protocols designed for microscopy? Is it manual work or does it rely on computer simulations? Say for example I thought the H&E staining does not bring enough contrast. How ...