MadSci Network: Development
Query:

Subject: Mammalian birth

Date: Mon Feb 16 12:53:25 1998
Posted by Matthew Barchok
Grade level: 10-12
School: Madison High School
City: Madison State/Province: Ohio
Country: U.S.A.
Area of science: Development
ID: 887655205.Dv
Message:

When a mammal is born, what signals the baby to cut off the blood 
supply to the umbilical cord and begin breathing on its own?


Re: Mammalian birth

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