Celebrities including Dwayne “The Rock” Johnson and Samuel L. Jackson are calling on former coronavirus patients to donate their plasma to help others fighting the virus.

“COVID-19 is still impacting so many people. If you survived it, then you're the heroes we need. The plasma that's in your blood can literally save lives,” Johnson said in a video for The Fight In Us organization released Wednesday. 

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“You fought for your life, now let's take the fight to COVID-19,” Jackson said in another video for the organization. 

Patients who recovered from the coronavirus are eligible to donate plasma if they have a laboratory test, antibody test or clinical diagnosis. They must also be symptom free for at least 14 days prior to visiting a donor center, according to guidelines on The Fight in Us website

Plasma is collected through an automated process that separates plasma from other blood components and then returns red blood cells and platelets to the donor. 

Plasma from recovered coronavirus patients can be directly transferred into coronavirus patients or be used to make potential medicines, according to the organization. 

Other celebrities involved in the push include Helen Mirren, Ken Jeong and Daniel Dae Kim.