title: 2-aminoethylphosphonic Acid metabolism during embryonic development of the planorbid snail helisoma.
abstract: In freshly laid egg masses of Helisoma sp., more than 95 percent of the phosphorus is found in alkylphosphonic acids, as determined by phosphorus-31 nuclear magnetic resonance spectroscopy. These compounds are metabolized during embryonic development, as shown by differential acid hydrolysis and experiments with phosphorus-33-labeled phosphoric acid. Further, nuclear magnetic resonance spectroscopy indicates phosphonic acid involvement in related snail families, including the schistosomal vector Biomphalaria glabrata.
authors.forename: M V
authors.initials: MV
authors.lastname: Miceli
authors.forename: T O
authors.initials: TO
authors.lastname: Henderson
authors.forename: T C
authors.initials: TC
authors.lastname: Myers