PMC10327669_01
(A) Culture of the first urine specimen on blood plate; (B) Gram stain result of the first cultured strain; (C and D) phenomenon of polymorphonuclear Leukocyte phagocytosis under microscope. Red arrow point to the phenomenon of polymorphonuclear Leukocyte phagocytosis.
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On the third day, Gram staining of the urine culture revealed positive cocci chains (Figure 1A and B). Upon centrifugation and sediment Gram staining, a high number of polymorphonuclear leukocytes and positive cocci chains were observed (Figure 1C and D).