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The Endowment for Human Development
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Main Stem Bronchi


9 weeks

From The Biology of Prenatal Development.Buy Now

Script: نومٕ ہفتہٕ

شُہ ہنکس نظام منز چھ دُچھنی تۂ کھوری شہہ نالہ بنٱن تہٕ رلاوان چھ ہوانالہٕ شؤشس سیئتی

All ages referenced to fertilization, not last menstrual period.
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4D Ultrasound
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