defense reaction

• Reacción automática fisiológica o psicológica ante una amenaza percibida, que a menudo incluye el mecanismo de 'lucha o huida' o conductas defensivas.

An automatic physiological or psychological response to a perceived threat, often involving the fight-or-flight mechanism or protective behaviors.

1. Biological immune responseB2formal

   The body's automatic response to protect itself against harmful pathogens, injuries, or threats.

   reacción de defensa

   • A fever is a common defense reaction to an infection.
   • The immune system triggers a defense reaction when it detects a virus.
   • Allergies are an overactive defense reaction to harmless substances.