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Supertopics:
Gene Expression Glitches
Genetic Disease
Causes of Birth Defects
Genetic Mutations
Genetic Birth Defects
Documents:
cat with two faces lives twelve years
web
Rodrique Ngowi
Associated Press
2011-09-30
surgeons remove baby's second head
web
Reuters
2005-02-19
Snopes says the two-headed girl photos are real
web
David Mikkelson
Snopes
2005-02-19