Investigation into rabbit infusion media for the growth of Mycoplasma gallisepticum antigens for inoculation into rabbits.

Serum cholesterol in rabbits was elevated, by intravenous inoculation of 20% Tween 80, to amounts thought to have been sufficient to support growth of Mycoplasma gallisepticum when 20% of such serum was added to rabbit infusion broth.However, better growth of the organism was obtained with a supplement of 5% rabbit serum and commercial cholesterol. Investigation showed that normal rabbit serum may be inhibitory, which would explain these findings. The commercial cholesterol was not antigenic.