Featured in immune system

A clinician readies a vaccine for injection.
a doctor in a face mask, gloves, and hair net draws a vaccine with a syringe out of a vial
A plastic plate with differently colored wells, being held up to a light by gloved hands.
blood cells moving through blood vessel
Glasses of juice, smoothies, and berries on a table.
A Uzbekistani doctor holds up a dose of the Pfizer COVID-19 vaccine in front of the company's logo.
President Donald Trump signing an executive order in the White House in 2017