Scientists had long known that many bacteria have outer membranes.
Many bacteria have two membranes in their cell walls.
Many bacteria have been found to produce various polyhydroxyalkanoates (PHA) biopolyesters.
Many bacteria have been shown in vitro to stimulate NETosis, including the oral bacteria Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans62.
Many bacteria have genes that produce an enzyme that breaks down insects' hard, outer shells, which are composed of a tough carbohydrate called chitin.
Many bacteria have been identified as infectious agents disseminated through ventilation systems.
Many bacteria have been studied for their suitability as faecal indicators (Ashbolt et al. 2001; US EPA 2007).
Based on the team's screens of soil, the compound seems to be relatively rare, so Lewis doubts that many bacteria have evolved to produce an enzyme that could destroy it.
Blaser is interested in why so many bacteria have colonized the human body for so long – the simple fact that they have strongly suggests that they serve some useful purpose.
Second, many bacteria have the ability to alter the microenvironment that they inhabit through secretory products [45], [46].
