@ Masa: though CE's title is "Board Bimbo", she's actually closer to the Resident Biomedical Scientist. She has (if I'm not wrong) a Ph D in this field and is still active in this field as a researcher and if she doesn't know something in the bio-medical field, she'll have someone close at hand that does. So her opinion
counts, at least for me. And though her style by moments can have a know-it-all quality, in certain regards that is because she does know it all.
The fact that her opinion overlaps for great part my own is of course totally irrelevant.
I retire now from this discussion, because I think CE has more or less said what I wanted to say and much better worded.