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Beta-hemolytic and semi-transparent Listeria monocytogenes colonies grown on blood agar for 24 hours.
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Meanwhile, L. monocytogenes was recovered from initial and follow-up blood cultures on the third day of hospitalization (Figs. 1 and 2).
Gram stain of a blood culture indicates the presence of gram-positive coccobacilli (light microscope at x1,000 magnification).
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Meanwhile, L. monocytogenes was recovered from initial and follow-up blood cultures on the third day of hospitalization (Figs. 1 and 2).