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?

12 comments:

KB said...

Ascaris, beautiful!

Anonymous said...

Ascaris egg! Good chance this one was fertilized.

Eagleville said...

Embryonated Ascaris with larva in the act of the hatch.

Ernesto Vidal said...

Larvae of Ascaris lumbricoides hatching from a corticated egg

Anonymous said...

Long live the Ascaris. It really survived the preservation.

Florida Fan

Unknown said...

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

Anonymous said...

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

Sheldon Campbell said...

Not an ID problem, but OMG.

Anonymous said...

ascaris awesome!

Anonymous said...

Ascaris lumbricoides!

S McLellan said...

The miracle of birth... adorable!

William Sears said...

Ascaris hatching