As far as I can tell, almost no Witness I know is aware that all milk contains blood cells.
see:
www.promom.org/bf_info/sci_am.htm
White blood cells are simply part of milk, human or otherwise. Any reference work will support this simple fact.
If this fact was widely publicized, again and again, could it create severe trouble for the Watchtower?
I don't recall any published defense of this fact, in any article or "Question From Readers". I can easily imagine
asking your relatives , "Is eating white blood cells OK? Does "abstain from blood" mean only red blood?"
"Is drinking milk wrong? Is breastfeeding wrong?"
If they ever quote Acts 15, you could always correct them immediately and say "yeah, but that only means red blood, right?..
because............"
and also
"why hasn't the Watchtower told you about this?"
This might be a lot more fun than trying to explain 607 chronology or argue that the UN alliance wasn't just a forgery.
metatron