 | Symbiont Name: Aeromonas veronii, Rikenella-like bacteria Host Name: Hirudo verbana Type: Digestive tract symbiosis Location: Extracellular Role: Unknown
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 | Symbiont Name: Buchnera species Host Name: Aphidiodea Type: Nutritional symbiosis Location: Extracellular Role: Amino acid synthesis
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 | Symbiont Name: Vibrio fischeri Host Name: Euprymna scalopes Type: Light organ symbiosis Location: Extracellular Role: Light production
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 | Symbiont Name: Xenorhabdus nematophilus Host Name: Steinemema carpocapsae Type: Digestive tract symbiosis Location: Extracellular Role: Digestion of insect host
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