Neisseria Species and Moraxella catarrhalis, Atlas of Neisseria Species and Moraxella catarrhalis, MICROBIOLOGY ATLAS, SUBCLINICAL ATLAS, tuyenlab.net, atlas in medical
|Fig 1. Characteristics of the family and the six genera. Moraxella catarrhalis,|
although morphologically and biochemically similar to the Neisseria spp., is no longer a
member of the family Neisseriaceae, so it is not included here.
|Fig 2. Cellular structure of Neisseria gonorrhoeae.|
|Fig 3. Virulent Neisseria gonorrhoeae after 24 hours|
of growth on modified Thayer-Martin (MTM) agar.
|Fig 4. Twenty-four hour growth of Neisseria|
gonorrhoeae on a JEMBEC plate streaked in a characteristic
|Fig 6. Candle extinction jar with inoculated|
modified Thayer-Martin agar plates.
|Fig 8. A, The oxidase disk test. The negative control is on the left and the|
positive reaction (purple) is on the right. B, Example of a positive oxidase reaction when
the reagent is dropped directly on the colony.
|Fig 9. A, Petechial skin rash associated with|
meningococcemia in a baby. B, Waterhouse-Friderichsen
syndrome illustrating hemorrhage (dark red areas) in the
|Fig 10. Direct Gram-stained smear of cerebrospinal|
fluid illustrating intracellular and extracellular gram-negative
diplococci of Neisseria meningitidis.
|Fig 11. Growth of Neisseria meningitidis after 48|
hours on chocolate (CHOC) agar on the left and sheep blood
agar (SBA) on the right. Of the classic Neisseria pathogens,
only the meningococcus grows on SBA and CHOC agar.
|Fig 13. Colony morphology of Neisseria cinerea on|
sheep blood agar (48-hour culture).
|Fig 14. Culture of Neisseria lactamica after 48 hours|
on blood agar (left) and chocolate agar (right). This
organism resembles Neisseria meningitidis.
|Fig 15. Dry, wrinkled, breadcrumb-like colony|
morphology of Neisseria sicca on sheep blood agar (48-hour
|Fig 16. Yellow pigmentation of Neisseria subflava|
on sheep blood agar (48-hour culture).