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An organism living in a state of commensalism.



an organism that lives with an organism of a different species (permanently or temporarily); the commensal benefits from the association and does not injure the other organism. This association is called commensalism.

References in periodicals archive ?
In a recent study comparing the immune cell response to the commensal bacteria B.
Most organisms which colonize are harmless commensals and are best left alone.
Commensal bacteria on lesional skin may possess markedly reduced antimicrobial activity.
2011) have studied spatial activity and behaviour of various commensal rodents in an open field and arena with factors that may change the behaviour (social composition, shelter and food).
The huge number of resident microorganisms, identified by modern high-throughput sequencing technology, is called commensal microbiome.
In addition to their effect on the body's immune response, commensal bacteria enhance skin health by inhibiting pathogen growth.
If we can understand how aging affects our commensal population--first in the fly and then in humans--our data suggest that we should be able to impact health span and life span quite strongly, because it is the management of the commensal population that is critical to the health of the organism.
To the Editor: Members of the genus Haemophilus are commensal bacteria of the upper respiratory tract, and H.
aureus becoming a pathogen rather than a commensal of the skin.
It incorporates tables, illustrations, clinical cases, and study questions, and introduces microbiology, commensal and pathogenic microbial flora in humans, and sterilization, disinfection, and antisepsis, as well as the techniques used by microbiologists and immunologists, then covers immunology (updated and reorganized for this edition), including cells and tissues, innate immunity, antigen-specific immunity, antimicrobial immunity, and vaccines, and bacteria, viruses, fungi, and parasites.
Although immune cells in the skin protect against harmful organisms, until now, it has not been known if the millions of naturally occurring commensal bacteria in the skin - collectively known as the skin microbiota - also have a beneficial role.
Probiotics are defined as nonpathogenic living microorganisms, including some commensal bacterial flora, which have beneficial effects on host health and disease prevention and/or treatment.