Studies on organogenesis during regeneration in the earthworm, Eudrilus eugeniae, in support of symbiotic association with Bacillus endophyticus

Organogenesis and animal adaptation upon loss of body parts are crucial events in regeneration of all traits, and both are uncovered areas in biology. The organogenesis of the mouth and anus during regeneration was studied in Eudrilus eugeniae. It was found that the earthworm regenerates a functional mouth and anus in six days.