PMC9709091_01
Gram staining of a positive blood bottle culture (Total magnification x 1000) (A); Bartonella quintana culture grown on chocolate agar plate after 15 days of culture (B) and a zoom of the black rectangular area (Total magnification x 15) (C).
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PMC9709091_01_gr1.jpg
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Gram-negative, poorly stained and pleomorphic bacilli (Fig. 1A). Given the context and previous results, a DNA extraction and a PCR assay selectively targeting After 15 days of incubation, tiny and shiny colonies were observed on both horse blood and chocolate agar plates (Figs. 1B and 1C).