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  2. Group A streptococcal infection - Wikipedia

    en.wikipedia.org/wiki/Group_A_streptococcal...

    A Gram stain is performed to show Gram-positive cocci in chains. Then, the organism is cultured on blood agar . The rapid pyrrolidonyl arylamidase (PYR) test is commonly used, wherein a positive reaction confers a presumptive identification of group A beta-hemolytic streptococci if the appearance and clinical context is consistent.

  3. Gram stain - Wikipedia

    en.wikipedia.org/wiki/Gram_stain

    A Gram stain of mixed Staphylococcus aureus (S. aureus ATCC 25923, gram-positive cocci, in purple) and Escherichia coli (E. coli ATCC 11775, gram-negative bacilli, in red), the most common Gram stain reference bacteria. Gram stain (Gram staining or Gram's method), is a method of staining used to classify bacterial species into two large groups ...

  4. Gardnerella vaginalis - Wikipedia

    en.wikipedia.org/wiki/Gardnerella_vaginalis

    Gram stain of cells from the vagina (the same magnification) with normal bacterial flora (top) and the bacteria that cause vaginosis (bottom). A variety of diagnosis techniques are currently available for identifying Gardnerella vaginalis such as the OSOM BV Blue assay, FemExam cards and nucleic acid amplification tests (NAATs), resulting in the determination of ongoing BV.

  5. The Sneaky Sign of Inflammation You Shouldn't Ignore - AOL

    www.aol.com/sneaky-sign-inflammation-shouldnt...

    Back pain. When your back aches and there’s no obvious cause (like lifting heavy boxes or falling), inflammation could be the root cause. Inflammatory back pain tends to come on gradually and ...

  6. Vaginal flora - Wikipedia

    en.wikipedia.org/wiki/Vaginal_flora

    To obtain a Nugent score, gram stain techniques are carried out and it characterizes the bacterial morphology on a scale. A score greater than 7 is associated with BV, 4-6 is an intermediate abnormality, and 0-3 is normal. [42] Typically, only women with symptoms receive treatment.

  7. Staphylococcus saprophyticus - Wikipedia

    en.wikipedia.org/wiki/Staphylococcus_saprophyticus

    Even when such an infection occurs above the neck of the bladder, low numbers of colony-forming units (less than 10 5 cfu/ml) are often present. [8] Staphylococcus saprophyticus is identified as belonging to the genus Staphylococcus using the Gram stain and catalase test.

  8. Gram-positive bacteria - Wikipedia

    en.wikipedia.org/wiki/Gram-positive_bacteria

    Both gram-positive and gram-negative bacteria commonly have a surface layer called an S-layer. In gram-positive bacteria, the S-layer is attached to the peptidoglycan layer. Gram-negative bacteria's S-layer is attached directly to the outer membrane. Specific to gram-positive bacteria is the presence of teichoic acids in the cell wall. Some of ...

  9. Ureaplasma urealyticum - Wikipedia

    en.wikipedia.org/wiki/Ureaplasma_urealyticum

    This evolutionary trajectory has resulted in the loss of the peptidoglycan cell wall, a hallmark characteristic of Gram-positive bacteria. Despite this evolutionary divergence, instances have been reported where U. urealyticum, upon gram staining, exhibited the same characteristics as Gram-negative bacteria.

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