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From Biology-Online Dictionary
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1. (Science: cell culture) The collecting of cells, organisms, or the growth medium upon which an experimental population (of cells or microorganisms) had grown, so that the collection can be analysed or so biochemicals can be extracted from it.

2. (Science: zoology) harvesting ant, any species of ant which gathers and stores up seeds for food. Many species are known.

The species found in southern Europe and Palestine are Aphenogaster structor and a. Barbara; that of Texas, called agricultural ant, is pogonomyrmex barbatus or Myrmica molifaciens; that of Florida is pogonomyrmex crudelis.