blood agar


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blood a·gar

a mixture of blood, usually sheep or horse, and an agar-based medium used for the cultivation of many medically important microorganisms.

blood agar

n.
An agar medium that is enriched with whole blood and used to grow certain strains of bacteria.

blood agar

a culture medium consisting of blood (usually sheep's blood) and nutrient agar, used in bacteriology to cultivate certain microorganisms, including Staphylococcus epidermidis, Streptococcus pneumoniae, and Clostridium perfringens.

blood agar

An agar-based culture medium enriched with sterilised, defibinated sheep, rabbit or horse blood, which is used for primary plating and subculturing, especially to detect bacterial haemolysis.

blood a·gar

(blŭd ahgahr)
Mixture of animal blood, and an agar-based medium used to cultivate many medically important microorganisms.

blood agar

A bacterial culture medium of AGAR to which whole blood has been added. Blood agar selectively encouraged the growth of certain bacteria.

agar

a dried hydrophilic, colloidal substance extracted from various species of red algae. When suspended in a liquid medium and heated to 212°F (100°C), the agar dissolves. When it is allowed to cool to 110°F (43°C) the medium becomes a solid gel. It is used in culture media for bacteria and other microorganisms, in making emulsions, and as a supporting medium for immunodiffusion and immunoelectrophoresis. Because of its bulk it is also used in medicines to promote peristalsis and relieve constipation.

birdseed agar
one containing Guizotia abyssinicia (Niger) seed and creatinine, used for growing Cryptococcus neoformans. Called also Niger agar.
bismuth sulfite agar
a special preparation used for isolation of salmonellae from food.
blood agar
a culture medium used for the growth of bacteria. Consists of agar and intact erythrocytes.
brain heart infusion agar
used for cultivating the yeast phase of dimorphic fungi.
brilliant green agar
used to cultivate salmonellae.
chocolate agar
an enriched agar for the growth of Hemophilus, some Actinobacillus, and Taylorella spp. A molten agar and blood mixture is held at 122°F (50°C) prior to pouring plates. The additional nutrients supplied are hemin and NAD.
agar diffusion test
see antimicrobial sensitivity test.
eosin-methylene blue (EMB) agar
used for the identification of Eschericha coli.
agar gel immunodiffusion test
see immunodiffusion tests.
MacConkey agar
contains bile salts, lactose and neutral red indicator for isolation of enterobacteria.
mannitol salt agar
selective for staphylococci.
milk agar
contains skim milk and used to demonstrate casein digestion.
Niger seed agar
see birdseed agar (above).
nutrient agar
the basic growth medium for bacteria, composed of beef extract and peptone.
potato dextrose agar
used in cultivating fungi; promotes sporulation and pigmentation.
Sabouraud's dextrose agar
one used for isolation of fungi. See also dermatophyte test medium.
agar sausage
see medium sausage.
xylose lysine (XLD) agar
used to differentiate Enterbacteriaceae.
References in periodicals archive ?
Effect of blood agar from different animal blood on growth rates and morphology of common pathogenic bacteria.
Routine laboratory protocol for HVS analysis consisted of inoculation onto blood agar and Chocolate/Thayer Martin agar, with a wet prep for Trichomonas vaginalis and a Gram stain.
3] (PYGC -- Proteose -- peptone -- yeast extract -- glucose -- cysteine) Table 3: Efficiency of axenic and monoaxenic various types blood agar on the cultivation of Acanthamoeba.
Human blood agar is widely used in developing countries for the isolation of bacteria from clinical specimens.
Results revealed there was no statistically significant difference in the quantity of bacteria surviving on the toothbrush filaments between the 2 groups after the 30-day trial period; however, findings only reflect the number of aerobic bacterial colony forming units on blood agar or Mitis Salivarius agar.
Tryptone yeast broth and basal feather or snake skin medium were used to detect specific keratinase activity and pigment production, Mueller-Hinton plates for microbial interactions and antibiotic production, blood agar and basal medium for hemolytic action and carbon utilization by Streptomyces.
Soil and water samples were obtained, diluted with tap water, smeared onto blood agar plates, then cultured in anaerobic conditions.
If either the blood agar plate or the Lim broth preparation grew GBS, the results were reported as positive.
pneumoniae is based on the hemolysis pattern when cultured on blood agar plates and by additional biochemical tests on the cultured organisms: optochin sensitivity, the Quellung reaction, and bile solubility [4].
Ellen Jo Baron and colleagues have uniquely decided to combine veterinary health science and human blood banking to develop a blood agar from hair sheep as medium to grow bacteria.
Another blood agar plate with a metronidazole disc placed was incubated in an anaerobic jar for 48 hours.