selective culture medium

a liquid or solid culture medium that contains inhibitory substances (antibiotics, dyes, tellurite, bile salts, etc.) that allow the growth of the desired microorganism while inhibiting the growth of contaminants.

Selective culture medium. Bacteroides fragilis grows on bile-esculin agar; most aerobic and anaerobic bacteria are inhibited by bile and gentamicin in this medium, whereas B. fragilis is stimulated by bile, resistant to gentamicin, and able to hydrolyze esculin, producing a black precipitate.


Medical dictionary. 2011.

Look at other dictionaries:

  • selective culture — a culture grown on a medium, usually solid, that has been supplemented to encourage the growth of a single species of microorganism. It may also include substances that inhibit the growth of other species …   Medical dictionary

  • differential culture medium — a culture medium, usually solid, that reveals the presence of two or more similar microorganisms by differences in the appearance of their colonies. Such a medium may or may not be selective also …   Medical dictionary

  • sodium chloride (6.5 per cent) culture medium — a broth medium containing beef heart infusion, peptone, and 6.5 per cent sodium chloride, used for the selective culture of enterococci (especially group D streptococci) and other salt tolerant organisms. Nutrient broth or soybean casein digest… …   Medical dictionary

  • medium — 1. A means; that through which an action is performed. 2. A substance through which impulses or impressions are transmitted. 3. SYN: culture m.. 4. The liquid holding a substance in solution or suspension. 5. Any of the substances in which a… …   Medical dictionary

  • Selective exposure theory — is a theory of communication, positing that individuals prefer exposure to arguments supporting their position over those supporting other positions. It has been discussed by communication scholars for decades. Since excessive amount of media… …   Wikipedia

  • Ashdown's medium — is a selective culture medium for the isolation and characterisation of Burkholderia pseudomallei (the bacterium that causes melioidosis).Ashdown s medium was first described by LR Ashdown in 1979. [cite journal author=Ashdown LR title=An… …   Wikipedia

  • Rogosa selective Lactobacillus agar — a selective culture medium containing tryptone, yeast extract, glucose, arabinose, sucrose, acetate, citrate, sorbitan monooleate, phosphate buffer, and agar, used in the culture and presumptive identification of lactobacilli. Called also SL a …   Medical dictionary

  • Growth medium — An agar plate an example of a bacterial growth medium. Specifically, it is a streak plate; the orange lines and dots are formed by bacterial colonies. A growth medium or culture medium is a liquid or gel designed to support the growth of… …   Wikipedia

  • Cell culture — in a Petri dish Epithelial cells in culture, stained for keratin (red) an …   Wikipedia

  • HIS-selective medium — is a type cell culture medium that lacks the amino acid histidine. It can be used with bacteria reliant on the expression of a gene encoding proteins involved in histidine expression in order to survive (Joung et al. , 2000). Only bacteria… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.