A typical presentation of microbiological laboratory findings makes use of tables to arrange knowledge. A desk designated as “Desk 5” doubtless accommodates observations and interpretations associated to the expansion of micro organism on MacConkey agar, a selective and differential tradition medium. This medium is often used to isolate and differentiate gram-negative micro organism, notably members of the Enterobacteriaceae household, based mostly on their skill to ferment lactose. The outcomes displayed in such a desk may embody colony morphology (colour, dimension, form), lactose fermentation (indicated by a colour change within the agar), and presumptive identification of bacterial species. A hypothetical instance can be the remark of pink colonies, indicating lactose fermentation, suggestive of organisms like Escherichia coli, whereas colorless colonies recommend non-lactose fermenters reminiscent of Salmonella species.
Organized presentation of those findings facilitates clear comparability between totally different bacterial samples or experimental situations. This contributes to correct and environment friendly identification of bacterial isolates, which is essential for prognosis of infections, epidemiological research, and analysis in numerous fields like meals security and environmental microbiology. Traditionally, culture-based strategies, together with the usage of selective and differential media like MacConkey agar, have been important for understanding bacterial variety and pathogenicity. These strategies stay invaluable instruments in fashionable microbiology laboratories.
