A study performed at the University of Arizona in 1991 demonstrated that Salvia apiana has potential antibacterial properties against Staphylococcus aureus, Bacillus subtilis, Klebsiella pneumoniae, and Candida brassicae.
The antimicrobial activity of essential oil was evaluated using the agar disc diffusion and broth microdilution methods against Staphylococcus aureus, Enterococcus faecalis, Pseudomonas aeruginosa, Escherichia coli, two strains of Klebsiella pneumoniae and two strains of Candida albicans.
Methanol extracts of G. fornicatum were shown to be inhibitory to the growth of various bacteria that are pathogenic to humans, including Bacillus subtilis, Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Salmonella typhimurium, and Streptococcus pyogenes, as well as the fungi Candida albicans, Rhodotorula rubra, and Kluyveromyces fragilis.
Community-acquired pneumonia caused by Klebsiella pneumoniae may be called Friedländer's Pneumonia, after Carl Friedländer.
In Klebsiella pneumoniae the cystathionine β-synthase is encoded by mtcB, while the γ-lyase is encoded by mtcC.