A molecule involved in iron acquisition. Secreted forms can generate social effects when other cells can use the bound iron.
A component of the outer membrane of Gram-negative bacteria used in experimental immune challenges. It induces host responses without constituting a replicating infection.
An experiment using hosts with a defined microbial status. Sterility or known community composition must be verified rather than assumed after treatment.
Introduction of a specified microbial preparation into a recipient or environment. Dose, viability and medium controls affect interpretation.
Transfer of microorganisms between parent and offspring. Evidence of transfer does not by itself demonstrate host benefit or genetic determination of the transfer.
The microorganisms occurring in a defined site or environment.
The microbial community and associated genetic or functional information in a specified environment; the exact operational definition should be stated.
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