How Small Are Bacteria?

[mvanwink5]

And these little guys will go right through a viral filter as will many bacteria. Ya gotta recalibrate your understanding of how big a human cell is. A human nucleated cell can have multiple colonies of bacteria, and that includes human immune cells. Think HIV is the only immune suppressing agent that crawls inside of a human cell to live?

http://www.sciencedaily.com/releases/20 ... 181339.htm

First detailed microscopy evidence of bacteria at the lower size limit of life
Date: February 27, 2015
Summary:
Scientists have captured the first detailed microscopy images of ultra-small bacteria that are believed to be about as small as life can get. The existence of ultra-small bacteria has been debated for two decades, but there hasn't been a comprehensive electron microscopy and DNA-based description of the microbes until now. The cells have an average volume of 0.009 cubic microns (one micron is one millionth of a meter). About 150 of these bacteria could fit inside an Escherichia coli cell and more than 150,000 cells could fit onto the tip of a human hair.