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RE: Potassium cell study



Jim, 

Thanks for the information.  But I notice that you do not cite a reference

for the cellular experiment in this post or on your Web site.  Where did you

get the information?  What was the molar concentration of the potassium in

the culture media?  Did the addition of additional K-39 produce the same

affect on the cells?



Also, it is easy to keep a frog heart beating by putting in it salt water,

whether it is radioactive water (whatever that is) or not.



Have a nice day.



-- John 

John Jacobus, MS

Certified Health Physicist 

3050 Traymore Lane

Bowie, MD  20715-2024



E-mail:  jenday1@email.msn.com (H)      



-----Original Message-----

From: Muckerheide [mailto:muckerheide@attbi.com]

Sent: Wednesday, July 10, 2002 11:31 PM

To: Kai Kaletsch; radsafe@list.vanderbilt.edu

Subject: Re: Potassium cell study



This was answered:  To go further, ORNL removed the heavier 0.02% K-40

(along with the 6.9% K-41) in the calutrons. (This is easy to do, but not

cheap, because the low K weight makes a significant diff between 40 and 41

vs. 39.)  They did this in several campaigns. The last I heard about (not

confirmed) was a batch for Argonne in the mid-80s (for $75K).



Using K-39 instead of nat-K caused debility and death in organisms and

cells; addition of the separated K-40 to the K-39, or nat-K, resulted in

recovery of the organisms, as did addition of external rad sources to

supplement the missing essential K-40 radiation for biology functions.



Ionizing radiation is essential for biology to function. In the early 2oth

Century experiments such as dissecting a frog to provide access to the

heart, and after death (heart stopping after brain death), a drop of water

with radioactivity restarted the heart.



See also some of the relevant materials at Section

1.2.3 Secondary biogenic radiation: Ionizing radiation as essential to life:

http://cnts.wpi.edu/rsh/DD3/1.2.3.htm

. . .

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