The sudden shutdown of millions of dollars in federal funding to Columbia University this month is already disrupting medical and scientific research at the school as it confronts a Friday deadline to bow to government demands for sweeping changes in how it deals with dissent on campus.

Dozens of medical and scientific studies are ending or at risk of ending, leaving researchers scrambling to find alternative funding.

Deal with the loss of canceled federal contracts and grants over alleged antisemitism on campus or cave to Trump demands that have been criticized