Nodule
From Wikipedia, the free encyclopedia
A nodule describes an aggregation of similar cells or particles in a number of scientific fields:
- Nodule (geology), a small knobbly rock or mineral cluster, such as a manganese nodule
- Nodule (medicine), a small aggregation of cells
- Root nodule, an outgrowth formed on the roots of legumes that house symbiotic bacteria that fix atmospheric nitrogen and provide it to the plant in exchange for carbon
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