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.

Unknown said...

Larvae of Ascaris lumbricoides hatching from a corticated egg

Anonymous said...

Long live the Ascaris. It really survived the preservation.

Florida Fan

dmb 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