The latest restrictions require scientists to submit more comprehensive grant applications, and those applications will go through more stringent ethics reviews.

An amendment to the 2020 funding bill would prohibit the Trump administration from convening ethics advisory boards to review funding proposals involving the tissues.

External researchers funded by US federal grants can continue their experiments under tighter scrutiny.

Two NIH-run labs are affected, including one that seeks to cure HIV.

The facility claims to have a federal contract involving fetal tissue research canceled. HHS denies that claim.

Health and Human Services plans to review all research involving human fetal tissue.

High-resolution MRI reveals that human fetal hearts rapidly develop their major structures within a four-day period.

The university argues that the law prohibiting the use of aborted fetal tissue for research is unconstitutional.

A House bill would also bar funding for research with fetal tissues.