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Near-field microscopy on soft biological samples in water

 

 

Topography and fluorescence images of a growth cone of nerve cells of the hippocampus of rat. The samples are fluorescence labeled with DIC18, showing an absorption peak at 540 nm and an emission maximum at 570 nm. The sample was excited with an argon ion laser (l = 514 nm) at a power of about 5nW, as measured in the far field of the tip.(Samples courtesy of P. Fromherz, MPI Martinsried)

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Last modified: 30. Juli 1999