[Zbrafish] How to remove the yolk?

Bill Trevarrow via zbrafish%40net.bio.net (by trevarro from uoneuro.uoregon.edu)
Wed Jan 5 14:49:38 EST 2011

Hi Eric,

I have done this with live embryos.
The yolk dissolves in the cold ringers and the embryos will settle out (pelleting at 1G).
If the embryos are fixed the yolk will stay in a lump, not separate well from the embryos, not dissolve well, and will settle out like the embryos. 

On Jan 5, 2011, at 8:35 AM, eSAM wrote:

> Hello everyone,
> I'm planning to extract protein from whole embryos (from 36 to 72hpf).
> I saw that it is better to work on dechorionated and deyolked
> embryo...
> My question is about how to remove yolk? I saw that by triturating
> embryos in cold Ringer's, it should work...but you start from alive
> embryos? or already fixed?
> Could you give me some tips for this (I guess) easy step.
> Many thanks,
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Bill Trevarrow, Ph.D.
Thoren Aquatics
trevarro from uoneuro.uoregon.edu
Tel: (541) 844-9054
Fax: (541) 683-0996

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