An antidiuretic factor in the forest ant: purification and physiological effects on the Malpighian tubules.


Formica polyctena antidiuretic factor (FopADF) was purified from a 15% trifluoroacetic acid (TFA) extract of the abdomens of 150,000 worker ants. After solid phase extraction of the crude extract and reversed-phase HPLC on two C(18) columns, an antidiuretic factor was isolated. Tested at a concentration of 1.0 ant-equivalents/µl (ant-eq/µl), the factor… (More)


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