Dr. Abd Al-Roof Higazi at Jerusalem’s Hadassah hospital has found that high levels of peptide Alpha-defensin in some Covid-19 patients cause blood clots in their lungs. He is now testing the medication colchicine for dissolving the clots, as standard anticoagulants are ineffective.

https://www.israel21c.org/hadassah-researchers-find-source-of-corona-blood-clots/