Starting off 2021 with some #medmicro Nocardia fun facts 🧫

This aerobic actinomycetes genera is a saprophytic, strictly aerobic, gram positive bacilli found worldwide. 🌎

1/4
On gram stain it shows beaded, long filamentous rods.
2/4
Nocardia species are partially acid fast => mycolic acid chains are shorter than other mycobacterium

The strong acid (3% HCl-OH) used in regular AFB stain de-colorizes Nocardia ⚪️

The weak acid in modified/partial AFB stains (1% H2SO4-OH) leaves the carbol fushin intact 🟣
3/4
Nocardia colonies typically grow in 2-7 days on most media (BAP, CHOC, CNA and BCYE)

Colonies are dry, wrinkled chalky: white to pink orange when mature

Unique among partial acid fast actinomycetes for throwing up aerial mycelium 🙋(as seen on dissecting scope)
4/4
Nocardia colonies typically grow in 2-7 days on most media (BAP, CHOC, CNA and BCYE)Colonies are dry, wrinkled chalky: white to pink orange when matureUnique among partial acid fast actinomycetes for throwing up aerial mycelium (as seen on dissecting scope)4/4
Nocardia colonies typically grow in 2-7 days on most media (BAP, CHOC, CNA and BCYE)Colonies are dry, wrinkled chalky: white to pink orange when matureUnique among partial acid fast actinomycetes for throwing up aerial mycelium (as seen on dissecting scope)4/4
Nocardia colonies typically grow in 2-7 days on most media (BAP, CHOC, CNA and BCYE)Colonies are dry, wrinkled chalky: white to pink orange when matureUnique among partial acid fast actinomycetes for throwing up aerial mycelium (as seen on dissecting scope)4/4
You can follow @CostalesPathMD.
Tip: mention @twtextapp on a Twitter thread with the keyword “unroll” to get a link to it.

Latest Threads Unrolled:
Those who think consciousness raising & movement building are disconnected, or even a distraction from electoral politics have not paid attention to the history of social change.In this thread, we
Read more
The 2020s will be known as the Remote Work decadeA few predictions of what is likely to emerge[ a thread ] Third Space: Office and Working from Home will
Read more
1/29: Have you ever had a concept explained to you that helps frame complex issues you’ve been wrestling with and opens your eyes to new possibilities? A concept that I
Read more
By continuing to use the site, you are consenting to the use of cookies as explained in our Cookie Policy to improve your experience.