Culture media (medium, singular): solution of nutrients
required for the growth of bacteria.
Agar: a carbohydrate derived from seaweed used
to solidify a liquid medium.
Tryptic Soy Agar (TSA): a rich solidmedium containing
a digest of casein (the principal milk protein) and soy products. It
is an all-purpose medium that supports the growth of many diverse
organisms.
Tryptic Soy Broth (TSB): a rich liquidmedium containing
a digest of casein and soy products. It is a general-purpose
medium that supports the growth of organisms that are not exacting
in their food requirements.
Colony: a visible population of microorganisms
originating from a single parent cell and growing on a solid medium.
