|Description:||This 1978 image depicts laboratorians Ms. Charlotte Patton and Mr. Scott Johnson, examining a gas liquid chromatography profile of the cellular fatty acids produced by Legionella pneumophila bacteria.|
“Cellular fatty acids (CFA) of bacteria are structural in nature, occurring in the cell membrane or cell wall of all bacteria. When the bacteria are grown under standardized growth conditions, the CFA profiles are reproducible within a genus, down to the subspecies or strain level in some microorganisms. The Microbial Identification System (MIS), developed by MIDI (Newark, DE), provides a chromatographic technique and software libraries capable of identifying various microorganisms based on their CFA composition [Sasser 1990a; Sasser 1990b].”
From: “SAMPLING AND CHARACTERIZATION OF BIOAEROSOLS”, by Paul A. Jensen, Ph.D., PE, CIH and Millie P. Schafer, Ph.D., NIOSH/DPSE; Revision of Jensen PA, Lighthart B, Mohr AJ, Shaffer BT . ”Instrumentation used with microbial bioaerosol”. In: Lighthart B, Mohr AJ, eds. Atmospheric microbial aerosols: theory and applications. New York, NY: Chapman & Hall, pp. 226-284.