Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus from a symbiont, an organism living with an organism of a different species in close physical association. The symbiont is defined as the smaller of the organisms involved in a symbiotic interaction. [GOC:hb, ISBN:0198506732]
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Collection
C5: Ontology GO: Gene Ontology GO:BP: GO Biological Process