Adaptive immunity is the protection of a host organism from a pathogen or toxin. It is mediated by B cells and T cells, and is characterized by immunological memory. Adaptive immunity is highly ...

Adaptive radiation is the process by which a single lineage undergoes multiple speciation events to fill divergent ecological niches. This results in a cluster of phenotypically distinct, related ...

Assistive devices can help you perform daily tasks and live independently if you have a disability. There are many types of assistive devices, such as wheelchairs, hearing aids, and apps to help you ...