Oncology & Cancer

Immune cells determine how fast certain tumors grow

Tumors arise when cells shake off their restraints and start to multiply out of control. But how fast a tumor grows does not depend solely on how quickly the cancer cells can divide, a new study has found.

HIV & AIDS

How does HIV escape cellular booby traps?

HIV is believed to have evolved from a simian immunodeficiency virus, or SIV, that originated in chimpanzees. How SIV made the species jump has remained a mystery, since humans possess a defense mechanism that should prevent ...

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