Any process that initiates an innate immune response. Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens. Examples of this process include activation of the hypersensitive response of Arabidopsis thaliana and activation of any NOD or TLR signaling pathway in vertebrate species.
complement activation +
immune response-activating signaling pathway +
positive regulation of age-related resistance
positive regulation of antifungal innate immune response
positive regulation of complement activation, alternative pathway
positive regulation of complement activation, lectin pathway
positive regulation of innate immunity memory response
positive regulation of melanization defense response
positive regulation of natural killer cell mediated immunity +
positive regulation of pattern recognition receptor signaling pathway +
positive regulation of plant-type hypersensitive response
positive regulation of respiratory burst involved in inflammatory response
positive regulation of response to type II interferon +
positive regulation of type I interferon-mediated signaling pathway