A complex medium of amino acids, mineral salts, vitamins, polysorbate 80 and other substances diluted in water for injections

Medium 199 is used as a growth medium with broad species application in vaccine production. Many early tissue culture media were predominantly formulated from animal products and/or tissue extracts.

This webpage goes on to list several different types of Medium 199 formulations.
http://www.sigmaaldrich.com/Area_of_Interest/Life_Science/Cell_Culture/Medium_199.html