Re: Pollen gr=?ISO-8859-1?Q?=E0in_?= RI ?

Posted by Peter Zoon on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Pollen-grain-tp593121p593130.html

Search the CONFOCAL archive at
http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal

In general I'd say the best images are produced if the refractive medium
is the same as that of your objective immersion medium (oil with oil and
water with water).

Jeremy Adler wrote:

> Search the CONFOCAL archive at
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
> Does anyone have a plausible RI for pollen grains, or the RI of a medium that produces the best images ?
>  
> Jeremy Adler
> Cell Biology
> The Wenner-Gren Inst.
> Arrhenius Laboratories E5
> Stockholm University
> Stockholm 106 91
> Sweden
>
> ________________________________
>
> From: Confocal Microscopy List on behalf of Guy Cox
> Sent: Tue 6/17/2008 03:44
> To: [hidden email]
> Subject: Re: Pollen grain
>
>
> Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal 
> I think it's phenolics that are responsible for the fluorescence.  It
> is pretty broad but you can see different peaks (depending on the
> pollen).  
>  
> I had thought that spiky pollen grains would be a good TIRF test
> sample but not so - the fluorescence is deep enough below the
> surface to be out of TIRF range.
>  
>                                                                             Guy
>  
>
>
> Optical Imaging Techniques in Cell Biology
> by Guy Cox    CRC Press / Taylor & Francis
>     http://www.guycox.com/optical.htm
> ______________________________________________
> Associate Professor Guy Cox, MA, DPhil(Oxon)
> Electron Microscope Unit, Madsen Building F09,
> University of Sydney, NSW 2006
> ______________________________________________
> Phone +61 2 9351 3176     Fax +61 2 9351 7682
> Mobile 0413 281 861
> ______________________________________________
>      http://www.guycox.net <http://www.guycox.net/>  
>
>  
>
> ________________________________
>
> From: Confocal Microscopy List [mailto:[hidden email]] On Behalf Of Shalin Mehta
> Sent: Tuesday, 17 June 2008 10:08 AM
> To: [hidden email]
> Subject: Re: Pollen grain
>
>
> Search the CONFOCAL archive at http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal 
>
>
> I also keep one of the pollen grain slides in the confocal room. When a user
> says that there's something wrong with the scope, I ask them if they've checked
> will the pollen slide. Since they inevitably haven't, I tell them to do that
> first, and then come back if there's a problem with the microscope. Amazingly,
> they rarely return.
>
>
>  
>  
> This is  interesting, do pollen's have nice excitation-emission properties? Do they have specific peaks or just broad excitation and emission? What would be the underlying biological organelle/molecule responsible for autofluorescence?
>  
> Cheers
> Shalin
>
>
> Kristi DeCourcy
>
>
>
>
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~
> Shalin Mehta
> mobile: +65-90694182
> blog: shalin.wordpress.com <http://shalin.wordpress.com/>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~
> Bioimaging Lab, Block-E3A, #7-10
> Div of Bioengineering, NUS Singapore 117574
> website: http://www.bioeng.nus.edu.sg/optbioimaging/colin/index.html
>
> Liver Cancer Functional Genomics Lab, #6-05
> National Cancer Centre, Singapore 169610
> http://www.nccs.com.sg/researcher/02_04d.htm 
>
>
> No virus found in this incoming message.
> Checked by AVG.
> Version: 7.5.524 / Virus Database: 270.3.0/1505 - Release Date: 16/06/2008 7:20 AM
>
>
>
> No virus found in this outgoing message.
> Checked by AVG.
> Version: 7.5.524 / Virus Database: 270.3.0/1505 - Release Date: 16/06/2008 7:20 AM
>
>  

--

Peter D. Zoon
Centre for Advanced Microscopy
Section of Molecular Cytology
Swammerdam Institute for Life Sciences
Faculty of Science, University of Amsterdam

Visit.mail: Kruislaan 316 (room 2.03)
            1098 SM Amsterdam
            The Netherlands
E-mail:     [hidden email]
Tel:        +31-(0)20-5257860
Web:        http://wwwmc.bio.uva.nl/
            http://www.science.uva.nl/sils
            http://z00n.net/