With these microbial systems in the Pilbara, you can see these things in the field and under the microscope.
Particular scientific interest has been focused on bacterial (and other microbial) diversity in our intestines.
My research forced me to look at human societies from a microbial point of view, and they looked remarkably fragile.
Pasteur's discovery of the microbial cause of puerperal fever has in itself enormously reduced the deaths of women in child-birth.
microbe mi·crobe (mī'krōb')
A microorganism, especially a bacterium that causes disease; a minute life form. No longer in technical use.
A microorganism, especially a bacterium that causes disease. See Note at germ.