Re: Radio opaque biomolecule?

hmmm i'll dig in to it. so far people have been successful in imaging
realtime gene expression in single living cells.

On Jan 2, 10:11 pm, Cathal Garvey <cathalgar...@gmail.com> wrote:
> As pointed out by Jelmer, there probably isn't much in the "radio" area
> of the spectrum, but if you meant more generally "Are there any
> molecules that block useful scanning frequencies", then yes, there are.
> I believe (i.e. am not certain) that melanin can block X-rays to some
> extent, so a tight clot of melanin might be slightly X-ray opaque.
> Calcified matter is X-ray opaque, as is fibrosis, so it's probable that
> any knot of tightly woven protein would be somewhat opaque also.
>
> That's all structural stuff, of course. But structure's where it's at;
> for some frequencies, you'll need larger obstructions to absorb the
> light effectively. For radio, you'd need conductive bones or something;
> ask a radio tech for the specifics on absorption of radio and translate
> that into a biotech context. It wouldn't be easy, certainly.
>
> On 02/01/12 06:40, Veera wrote:
>
> > Recently i had some ideas about radioimaging gene expression. There
> > are many ways to study gene expression like using flourescent protien
> > tags. but all those requires sacrificing the animal for taking tissue
> > sections for immuno histochemistry. so i was searching some concepts
> > for visualizing gene expression within specific tissues inside the
> > body by some imaging techniques.Incidentally i came across bio
> > activated contrast agents.You can see that in this link <link>http://
> >www.nibib.nih.gov/HealthEdu/eAdvances/23Oct06<link>. But instead of
> > using contrast agent i'm just curious to know is there anything like
> > any protien or any biomolecule which is naturally radio opaque whose
> > gene can be sandwiched with the promoter of the gene of interest and
> > so we can image the the tissue and study the gene expression without
> > killing the animal.....
>
> --www.indiebiotech.com
> twitter.com/onetruecathal
> joindiaspora.com/u/cathalgarvey
> PGP Public Key:http://bit.ly/CathalGKey

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