Bacterial Pigment Production in Agar Culture - Microbiology Lab Example #2179428 (License: Personal Use)

This top-down image captures a vibrant microbial culture in a standard petri dish, where a central white colony is surrounded by a striking green halo-indicative of diffusible pigment secretion, such as pyoverdine or pyocyanin. The yellow background agar suggests the use of a selective or differential medium, possibly cetrimide agar or King’s B medium, optimized for pseudomonads. The irregular edges and fluid-like diffusion patterns reflect active metabolic activity and biofilm formation.

Used in academic microbiology labs, educational resources, or scientific publications to illustrate bacterial identification via pigment production, antimicrobial assays, or environmental isolate characterization. Matches user intent for visual examples of microbial phenotypes, lab techniques, or textbook figures.