Diseases, Conditions, Syndromes

Why don't antibodies guarantee immunity?

With millions of COVID-19 cases reported across the globe, people are turning to antibody tests to find out whether they have been exposed to the coronavirus that causes the disease. But what are antibodies? Why are they ...

Oncology & Cancer

Study shows low-dose chemo keeps cancer under control

Rather than try to wipe out cancer with powerful doses of chemotherapy, researchers said Wednesday an experimental approach using lower amounts of medication may work better to keep tumors under control.

HIV & AIDS

Six questions about HIV/AIDS that deserve more attention

As HIV investigators work to control and eradicate the virus worldwide, certain myths or misconceptions about the disease have been embraced, whereas other concepts with merit have been left relatively unexplored, argues ...

Diseases, Conditions, Syndromes

All the immunity, none of the symptoms, through dietary intervention

Worldwide, more than a million deaths occur each year due to diarrheal diseases that lead to dehydration and malnutrition. Yet, no vaccine exists to fight or prevent these diseases, which are caused by bacteria like certain ...

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Adaptation

An adaptation in biology is a trait with a current functional role in the life history of an organism that is maintained and evolved by means of natural selection. An adaptation refers to both the current state of being adapted and to the dynamic evolutionary process that leads to the adaptation. Adaptations contribute to the fitness and survival of individuals. Organisms face a succession of environmental challenges as they grow and develop and are equipped with an adaptive plasticity as the phenotype of traits develop in response to the imposed conditions. The developmental norm of reaction for any given trait is essential to the concept of adaptation as it affords a kind of biological insurance or resilience to varying environments.

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