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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 But I notice that you do not cite a reference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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