Betcha can't answer this...

[DrQuinn]

What does "CD4" stand for, as in "CD4 count?"

Kudos to the first and correct guess.

Q

 

[Mr. McDuck]

cluster of differentiation 4

 

[Bertelman]

cell block 4

....oh wait

...That's CB4

😀

(might have been a more interesting post before the days of wikipedia, google, etc.)

 

[Mr. McDuck]

Yeah, I definitely used google to make sure I was right after I posted. 😛

Would have left it if it was wrong, though. No sense in ruining it. I could be wrong though, I'm not 100% positive.

 

[Blade28]

It is cluster of differentiation (if I remember my Step 1 studying accurately!).

 

[Barry Otter]

I learned it as Cluster Designation.

 

[stenosis]

I learnt it as "cluster of designation" in an Immunology class I took in my undergrad degree.

 

[Freggle]

Cluster of Designation, my friend 🙂

(off course it might be differentiation or something like that. Pre-med already seems so far away...)

 

[Mr. McDuck]

It's possible there is more than one way to say it. That happens with many a thing. Differentiation/Designation...both are probably correct.