the skin and mucous membranes are continuously colonized by commensal bacteria that do not cause disease unless the subject is weakened.

determines the growth of a bacterium in the presence of antibiotics and classifies it as susceptible, resistant or intermediate.

a substance of natural or synthetic origin capable of stopping the multiplication of bacteria.

a foreign substance in an organism which triggers the production of an antibody (immune reaction).

a unicellular microorganism lacking chlorophyll and visible only under a microscope. Bacteria do not belong to either the plant or the animal kingdom.

an area of science which studies the correlation between the structure of natural molecules and the consequences for their activity.

any indicator (nucleic acids, enzymes, metabolites and other types of molecules: histamines, hormones, proteins, etc.) present in the body or excreted by it as a biological response to a physiological [..]

an essential blood test in infectious diseases. It is carried out by taking a sample of venous blood, which is then cultured to reveal the presence or absence of germs.

a genus of Gram-negative bacteria that can cause food poisoning.

the most important and best-known yeast species of the Candida genus. It causes infections (candidiasis), mainly of the digestive and vaginal mucosa.