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The authors conducted laboratory experiments to investigate the effects of the exposure to a sublethal concentration of lead on the ultrastructure and acid phosphatase compartmentalization of the chloragogenous tissue of earthworms (Eisenia foetida).
The authors carried out a cytogenetical study on the chromosomes and nuclear DNA amounts of the terrestrial earthworms Octodrilus complanatus and Eisenia foetida (Annelida: Oligochaeta: Lumbricidae).