What are two biological applications that use radioactive isotopes?

Question

What are two biological applications that use radioactive isotopes?

Answer 1

Radiology in the treatment of cancer and in the detection of the blood flow.

Answer 2

http://www.google.com/search?hl=en&q=bio...

I'm not trying to be a jerk or lazy, I'm just showing you how easy it is to find answers to questions you might have on the internet.  I typed in "biological applications for radioactive isotopes" and found a lot of good articles.

Give a man a fish, he'll eat for a day.

Give a man a fishing pole, he'll eat for a lifetime?

cheers,

-Basscreator

Answer 3

examinations of thyroid gland which use 131I , I, for iodine which is essentially used by thyroid gland

PET (positron emission topography utilises sugars marked with 15 O or 11C in order to visualize the brain work