Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at OPM.gov.

Understanding Human Placental Biology

NICHD’s Human Placenta Project (HPP) supports research to better understand placental biology because the structure and function of the placenta can affect pregnancy and future health outcomes. Learn about research groups using ultrasound technology, cell-free DNA/RNA screening, placentomics technology, and more to better understand the basic biology of the placenta.

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