Louse-borne relapsing fever is caused by the spirochete bacterium Borrelia recurrentis, which is transmitted by body lice ...

Arachnology and toxinology have increasingly illuminated the structural, biochemical and evolutionary diversity of venom ...

The complement system, a central component of innate immunity, exerts a dual influence on cerebral ischaemia, driving both acute tissue injury and later reparative processes. Following arterial ...

A new study may have found what’s behind long COVID symptoms. Scientists say a portion of the immune system may stay activated after someone recovers from the virus. Research into what causes long ...

Long Covid has long eluded scientists looking for its cause. Not knowing what triggers its persistent and distressing symptoms makes the condition challenging to treat; it’s hard to even say ...

Share on Pinterest A study offers new clues on why long COVID persists in some individuals. krisanapong detraphiphat/Getty Images Despite the debilitating nature of long COVID, there is an absence of ...

Allergic asthma is driven by a complex interplay between innate and adaptive immunity in which the complement system plays a central role. Activation of complement via the classical, lectin or ...