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How to slow down micro subjects

 
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 19975
Location: Richland, Washington State, USA

PostPosted: Fri Aug 08, 2008 12:05 pm    Post subject: How to slow down micro subjects Reply with quote

Passing along a reference posted yesterday by Gordon Couger on the Yahoo Microscope Group...

Narcotizing, Slowing Down, and Preserving Microscopic and other Aquatic Animals
by John Gustav Delly, Scientific Advisor, College of Microscopy, Westmont, IL
June 16, 08
http://www.modernmicroscopy.com/main.asp?article=79&page=1
From @ the EyePoint column in The McCrone Group's online journal, Modern Microscopy.

--Rik
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DaveW



Joined: 04 Aug 2006
Posts: 1702
Location: Nottingham, UK

PostPosted: Fri Aug 08, 2008 1:52 pm    Post subject: Reply with quote

I am not a microscopist, but did read once Rik where somebody added plastic wallpaper paste (Polycell in the UK) to the liquid to increase it's viscosity and slow the swimming subjects down so they did not cross the field of view so quickly. Bit like swimming through mud or molasses for them! I presume it would aid photographing them also?

DaveW
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 19975
Location: Richland, Washington State, USA

PostPosted: Fri Aug 08, 2008 2:12 pm    Post subject: Reply with quote

Yes, it would, and in fact "Mechanical Methods", specifically including wallpaper paste, is the first class of methods discussed in Delly's paper.

--Rik
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Walter Piorkowski



Joined: 14 Aug 2006
Posts: 684
Location: South Beloit, Ill

PostPosted: Sun Aug 24, 2008 8:37 pm    Post subject: Reply with quote

Thanks for this link Rik, it made interesting reading. Walt
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