Monday, April 18, 2016

Case of the Week 393

This week's amazing case was photographed by Emily F. in my lab. The specimen is a formalin-preserved stool specimen from our teaching archives - but not everything was dead! A great reminder for why we need to treat all specimens as potentially infectious - even when preserved in formalin for months.




Identification?
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12 comments:

  1. KBApril 18, 2016 at 9:49 PM

    Ascaris, beautiful!

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  2. AnonymousApril 18, 2016 at 9:51 PM

    Ascaris egg! Good chance this one was fertilized.

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  3. EaglevilleApril 18, 2016 at 10:35 PM

    Embryonated Ascaris with larva in the act of the hatch.

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  4. UnknownApril 18, 2016 at 11:00 PM

    Larvae of Ascaris lumbricoides hatching from a corticated egg

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  5. AnonymousApril 19, 2016 at 5:01 AM

    Long live the Ascaris. It really survived the preservation.

    Florida Fan

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  6. dmbApril 19, 2016 at 6:01 AM

    That is awesome and a little humbling... I saw this a couple of times after YEARS of preservation in Professor Cross' lab.

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  7. AnonymousApril 19, 2016 at 7:02 AM

    We see the same thing with Toxocara spp eggs in our lab, some of them have 4 or 5 years in formalin and the larvae inside still moves (were recovered from adult worms or from a sand pit from a public square).

    -HLCM fan

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  8. Sheldon CampbellApril 19, 2016 at 8:20 AM

    Not an ID problem, but OMG.

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  9. AnonymousApril 19, 2016 at 8:24 AM

    ascaris awesome!

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  10. AnonymousApril 20, 2016 at 10:46 AM

    Ascaris lumbricoides!

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  11. S McLellanApril 20, 2016 at 6:43 PM

    The miracle of birth... adorable!

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  12. William SearsApril 20, 2016 at 8:24 PM

    Ascaris hatching

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