circularly polarized light

Hi everyone,

Does anyone have experience with the analysis of collagen using circularly polarized light instead of normal (linearly) polarized light? The former shows some important improvements in collagen content (see Whittaker et. al. Basic Res Cardiol 89:379-410 (1994)). If anyone used this circular light before, can you please tell how you created it.
Help is greatly appreciated.

Dolf Segers
Dept. of Experimental Cardiology
Thopraxcentre, Erasmus MC, Rotterdam
The Netherlands

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