Full text not available. This article's full text was not recovered in the archive. The citation and links above point to the published record. Related research Microbiology 137(3):541 Microbiology Microbiology 137(3):717 Microbiology Reference collection of strains of the Salmonella typhimurium complex from natural populations Journal of General Microbiology · 1991 Permeability of dormant spores of Bacillus subtilis to malachite green and crystal violet Journal of General Microbiology · 1991 Attachment and replication of Pseudomonas aeruginosa bacteriophages under conditions simulating aquatic environments Journal of General Microbiology · 1991 Next article in this issue →Microbiology 137(3):541