What is a "slant" in microbiology?

In microbiology, a "slant" refers to a type of bacterial culture that is prepared by streaking the growth medium at an angle, allowing for increased surface area for microbial growth while also facilitating gas exchange. This method typically involves solid media, such as agar, placed in a tube where the medium is allowed to solidify at an angle rather than flat. This angled surface provides more area for microbial colonies to develop and makes it easier to observe colony morphology.

The correct answer highlights this specific preparation technique, which is foundational for culturing and isolating microbes in laboratory settings. It is commonly used for the storage and maintenance of bacterial strains, as it allows for easy access to the culture while preserving its viability over time.