On Doctoring MEDLINE searches, with reference librarian comments

The question was

"What is the therapeutic use, physiology and
pharmacokinetics of LDL?"

1 :  Lipoproteins, hdl/tu [Therapeutic Use]         {11}
2 :  Lipoproteins, hdl/pk [Pharmacokinetics]         {23}
3 :  Lipoproteins, hdl/ph [Physiology]         {97}
4 :  from 3 keep 17,45         {2}
5 :  from 1 keep 2-3,10         {3}
6 :  4 or 5         {5}
7 :  from 6 keep 1-5         {5}
8 :  from 6 keep 1-5          {5}

Reference Librarian comments

I was a little confused as to whether you meant HDL or LDL, but I
think that got cleared up in a separate message. My advice with this
search strategy would be to "explode" the term lipoproteins, so that
you get...

LIPOPROTEINS, HDL CHOLESTEROL

SCOPE: Cholesterol which is contained in or bound to high density
lipoproteins (HDL). High density lipoproteins transport cholesterol from
peripheral tissues to the liver thereby acting as a scavenger to prevent
excess accumulation and deposition of cholesterol in blood vessels.

... which I think you'd want. I think you could safely check the
"Focus" box too, so as to get really "on-target" references. Doing
it in three separate sets is just fine and dandy. Sometimes it's
nice to have things separate. But just for your info -- you could
get all three sub-headings (aspects) in one fell swoop.

In other words, you could do this:

exp *lipoproteins, hdl/tu,pd,ph -- and you'd get 202
...and then limit to human and english and get 121
...and then take it from there.