Which type of agar is primarily used to cultivate Neisseria species?

Thayer-Martin agar is specifically formulated to support the growth of Neisseria species, particularly Neisseria gonorrhoeae and Neisseria meningitidis. This selective medium contains antibiotics, such as vancomycin, colistin, and nystatin, which inhibit the growth of competing flora present in clinical specimens, allowing the fastidious Neisseria species to thrive. The presence of the enriched components, such as hemoglobin and nutrient supplements, further aids in the recovery of these organisms, which require specific nutrients for optimal growth.

Other types of agar listed, such as Columbia agar, Bile esculin agar, and Nutrient agar, do not provide the necessary environment or selective conditions required to isolate Neisseria species effectively. While they may support the growth of various bacteria, they lack the specific formulation needed to enhance the growth of Neisseria and suppress other bacterial species.