Oh really? I can name several off the top of my head...
How many of these people are microbiologists?
...you don't think if I slowed down picked through them more carefully I can come up specifically with microbiologists?
well, err, that's sort of the point. Strangely, when you make a claim, some of us here sort of expect you to be able to back up that claim. Not reply with "well, don't you think I could substantiate my claim if I really tried to?"