Enlarge / Dr. Walter Edmondson of PHS draws a blood sample from a Tuskegee...
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Enlarge / If homeopathic remedies had this much nonwater material in them, we probably...
Enlarge / The transplant team with the replacement heart. reader comments 12 with 11...
reader comments 13 with 11 posters participating Share this story Covid-19 Coverage View more...
Enlarge / The new standards place most of the country in a state where...
Enlarge / Two formerly paralyzed individuals go for a stroll in Lausanne, Switzerland. reader...
Enlarge / False-color image of a T-cell (orange) latching on to a cell in...
Enlarge / Cloned piglets that are engineered to be useful for organ transplants to...
Enlarge / Illustration of antibodies responding to an infection of SARS-CoV-2. Getty Images/Kateryna Kon/Science...
Enlarge / The transplant team with the replacement heart. reader comments 108 with 76...
