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Sperm Cells

Posted: 1/21/2009 12:00:00 AM
A group of students had a biology lab. As a part of this lab they were supposed to scrape some bacteria off their teeth with a toothpick and then examine it under the microscope.

But this one girl had some problems identifying her bacteria and asked the professor what they were.

"Those are sperm cells."
Tags:  students  biology  sperm 
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