Human cells usually contain two copies of most genes, one of which comes from the mother while the other comes from the father. It's long been thought that usually these two copies, or alleles of ...

Maureen Sideris, seated, with her sister Marion, receiving the 8th of 9 immunotherapy infusions during successful treatment for early-stage gastroesophageal junction cancer at Memorial Sloan Kettering ...

Modern HIV medicine is based on a common genetic mutation. Now, researchers have traced where and when the mutation arose -- and how it protected our ancestors from ancient diseases. Modern HIV ...