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| Pregnancy Testing
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| ==Introduction==
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| ==History==
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| * 1928 - Bernhard Zondek and Selman Aschheim procedure that measured the increase in gonadotrophic substance in the urine of a pregnant woman.
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| ** Immature mice injection with urine led to ovarian changes after a few days
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| ** Xenopus clawed frog replaced mice, injection with urine stimulated the females to lay eggs that were easily seen the next day.
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| * 1960s - immunological tests for chorionic gonadotropin.
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| * 1972 - Research on hCG at NIH by Judith Vaitukaitis and Griff Ross
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| * 1978 - USA first home pregnancy tests available.
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| ==References==
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| ===Reviews===
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| <pubmed></pubmed>
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| <pubmed></pubmed>
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| <pubmed>15838116</pubmed>
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| PMID 1117063
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| PMID 4823920
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| ==External Links==
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| {{External Links}}
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| * NIH [http://history.nih.gov/exhibits/thinblueline/index.html A thin blue line - The History of the Pregnancy Test Kit] | [http://history.nih.gov/exhibits/thinblueline/timeline.html Timeline]
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