Meaning of "stripped" in "stripped antibody-depleted sera"
I believe this is a failure of editing, and the meaning in this paper of &quot;stripped&quot; cannot be determined without correspondence with an author.  &quot;Stripped&quot; is an informal term for either removal of some substance or treatment with a material such as charcoal which affects many substances. Normally in papers &quot;stripped&quot; is qualified (at least initially) to indicate the type of treatment.  Here it could plausibly refer to antibodies, folic acid, or any number of other things.  It may be an artifact of draft editing that was meant to replace &quot;stripped&quot; with &quot;antibody depleted&quot; as a more precise term.  I suggest writing the corresponding author.