I agree.
  The spleen stores WBC's. That's nothing new.

Scientific method is always opened up to testing of falsifiable hypothesis. That's how science progresses.
  Where those with political/religious motivations have problems is:
1) Overwhelming evidence doesn't get negated simply because it conflicts with your particular belief.
2) Weak evidence doesn't get merit simply because it makes you feel good.

Science evolves. Some people's dogma doesn't.