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| A
10mW green solid state laser operating at 532 nm and a 10 mW |
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| red HeNe laser operating at 632.8 nm are collimated into a single |
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| beam
to prvide a narrow excitation beam for the Cye 3
and Cye 5 |
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| fluorescent
dyes on the microscope slide |
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| objective |
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| lens |
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