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1 sty 2022 · Positive test: Turbidity or cloudy growth extends from the line of inoculation. Negative test: Growth only along the stab line leaving the surroundings clear. Image Source: HiMedia
7 mar 2024 · Cystine Tryptic Agar (CTA) is a semisolid growth medium that is used for the isolation and cultivation of fastidious microorganisms, such as Neisseria gonorrhoeae, Neisseria meningitidis, Streptococcus pneumoniae, and Haemophilus influenzae.
15 maj 2024 · Cystine Tryptic Agar is a versatile medium used for the identification, maintenance, and differentiation of microorganisms. It aids in assessing carbohydrate fermentation, detecting bacterial motility, and supporting the growth of fastidious organisms.
CYSTINE TRYPTIC AGAR (CTA) INTENDED USE Remel CTA Agar is a semisolid medium recommended for use in qualitative procedures for determining the fermentation reactions of fastidious organisms such as Neisseria, pneumococci, streptococci, and nonsporeforming anaerobes. SUMMARY AND EXPLANATION
CTA medium contains cystine and casein peptone which supply essential nutrients for the growth of fastidious organisms. When the carbohydrate present is fermented, organic acids are produced and the medium becomes acidified.
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The biochemical tests for Neisseria and Haemophilus. What is the purpose of CTA agar (Cystine trypticase agar)? Differentiation of Nisseria species can be accomplished through observing acid production from carbohydrates in cystine trypticase agar.
