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Gum resins

Gum resin

The dry exudate from a number of plants, consisting of a mixture of a gum and a resin, the former soluble in water but not alcohol, the latter soluble in alcohol but not water.


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Permanent slide cells

... of he cricket, then, yes the cells are dead. They have been fixed and stained or the opposite, and there is very likely little water (but lots of resins) left in them.

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by canalon
Sun Sep 11, 2011 1:00 pm
 
Forum: Cell Biology
Topic: Permanent slide cells
Replies: 4
Views: 3837

Re: Important unknown nanotech within humans

... food preservative,sodium chlorite is present in toothpast,chewing gum,shampoo and aqueous cosmetic formulations,.formaldehyde is present in tobocco smoke, resins, crease resistant fabrics and aqueous cosmetic formulations such as shampoos, conditioners, ...

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by vincio
Tue Feb 10, 2009 7:22 am
 
Forum: Molecular Biology
Topic: Important unknown nanotech within humans
Replies: 32
Views: 162220

Re: inactive enzyme after purification with Ni-TED

There are a number of potential problems with nickel chelating resins and metalloproteins. First, the background buffer is typically phosphate which can form soluble and insoluble complexes with metals, leaching them off the protein in the process. Second, ...

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by blcr11
Sat May 03, 2008 9:32 pm
 
Forum: Molecular Biology
Topic: inactive enzyme after purification with Ni-TED
Replies: 3
Views: 3009

Re: protein purification Ni-NTA

... you see on the gel, or even remove them altogether if high or low ionic strength prevents binding completely. You can also try different IMAC resins to see if there are differences in the banding patterns, again suggesting that they could be non-specifically bound contaminants.

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by blcr11
Wed Apr 16, 2008 6:40 pm
 
Forum: Molecular Biology
Topic: protein purification Ni-NTA
Replies: 1
Views: 2351

Ni-NTA-Columns

... chelation matrix. USB, for one, sells a silica-based Ni resin they claim gives lower non-specific binding compared to either IMAC or agarose-type resins.

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by blcr11
Thu Feb 14, 2008 12:09 pm
 
Forum: Molecular Biology
Topic: Ni-NTA-Columns
Replies: 3
Views: 2304
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