* small measurements - visibility?
** millimter
*** naked eye
** micrometer/micron
*** bacteria
*** light microscope
** nanometer
*** viruses
*** electron microscope
* roles of microbes mentioned in lecture one
** photosynthesis, nitrogen fixation, bioremediation, genetic engineering, soil, disease, digestion, vaccines, pharamceuticals, food industry, biofuels, mining industry
* dangerous microbes
** small amount are dangerous pathogens
** ~2000 pathogenic microbes
** 1/500 people die of pathogens
* meningitis etymology
** -itis:  inflation of
** meninges:  membranes surrounding brain and spinal cord
* menigitis - caused by
** bacteria, virus, fungi, protozo, drugs, and malignant cells
** most serious form caused by bacteria
*** e.g. Neisseria meningitides and Hemophilus influenzae B
**** vaccines available only for N.m. forms of A and C
** fungi
*** e.g. Cryptococcus neoformans
**** uncommon except in aids patients
** virus - mild form of meningitis