Forget about the "fractions." Why not attack them on the banned component front? Almost every child born to jw mothers today feed upon her colostrum which contains a healthy amount of leukocytes, or white blood cells. This is also known as the baby's first immunization. The WTS has always used the reasoning of allowing certain components/fractions by way of what is passed naturally from mother to fetus in utero. What they do not acknowledge is that this natural setting of transference of WBC's during breastfeeding is also part of God's way of doing things. If God were to allow a mother to pass WBC's to her baby in a natural setting -- letting her baby intentionally feed upon WBC's!! -- then why would God have a problem with transfusing WBC's?
The WTS will never address WBC's in this setting. Never.