measurement units of DNA - (Jul/11/2010 )

Dear All
G'day..

I'm asking about Measurement Units of DNA,

In some journals & websites there are some units used for DNA and RNA calculation, I don't know what its mean, and when I search about it, I don't find good information
I hope if you know about it..

For example:
this phrase:

Fill in answers to 1–3 and either 4 (for converting ng/ml to pM) or 5 (for converting pM to ng/ml).
what mean pM..?

and also this one:

What is the specific activity of your radiolabeled nucleotide stock (Ci/mmol)?

What is the concentration of your radiolabeled nucleotide stock (mCi/ml)?
what means by mCi, Ci

and many others....
is there any website, pdf, books or anything that describe the meaning?

Waiting for your kind response,..
And regards

-noyara-

Google: mCi unit
Hit 1: http://en.wikipedia.org/wiki/MCI

can do it for all :lol:

-Gerard-

pM is most likely pico Molar

-pito-