Abstract
Mycoplasma colonies and Mycoplasma cells in preparations from infected milk and lymph nodes were observed for their fluorescent qualities after treatment with acridine orange. Mycoplasma colonies fluoresced brilliant red or red-orange. When treated after exposure to ribonuclease, the colonies fluoresced lime-green. There was no fluorescence when both ribonucleic acid and deoxyribonucleic acid were destroyed by perchloric acid. Detection of Mycoplasma in smears of mastitic milk or smears of infected lymph nodes was not definitive because of the large amount of nonspecific ribonucleic acid-rich material present during inflammatory reactions.
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