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- Publications
- Influence
Distribution of creatine, guanidinoacetate and the enzymes for their biosynthesis in the animal kingdom. Implications for phylogeny.
- J. V. van Pilsum, G. C. Stephens, D. Taylor
- Biology, Medicine
- The Biochemical journal
- 1972
1. The distribution of creatine and the creatine-synthesizing enzymes in the animal kingdom has been investigated. Creatine was found in tissues of all vertebrates examined, and in various… Expand
Epidermal amino acid transport in marine invertebrates.
- G. C. Stephens
- Biology, Medicine
- Biochimica et biophysica acta
- 24 February 1988
Distribution of creatine, guanidinoacetate and enzymes for their biosynthesis in the animal kingdom. Implications for phylogeny.
- J. V. van Pilsum, G. C. Stephens, D. Taylor
- Medicine
- The Biochemical journal
- 1972
Uptake of naturally occurring primary amines by marine annelids.
- G. C. Stephens
- Biology, Medicine
- The Biological bulletin
- 1 October 1975
Rapid, carrier-mediated influx of small organic molecules across the body wall of marine invertebrates has been studied by a number of investigators. Recent literature is reviewed by Stephens ( 1972)… Expand
The Orientation of Drosophila to Plane Polarized Light
- G. C. Stephens, M. Fingerman, F. Brown
- Biology
- 1 March 1953
The role of polarized light in the orientation of the honey-bee has recently been elucidated by von Frisch (1951). He demonstrated that bees can orient by means of a polarized light compass reaction… Expand
Transport of Dissolved Amino Acids by the Mussel, Mytilus edulis: Demonstration of Net Uptake from Natural Seawater
- D. Manahan, S. Wright, G. C. Stephens, M. Rice
- Biology, Medicine
- Science
- 5 March 1982
High-performance liquid chromatography provides direct evidence for substantial removal of naturally occurring specific free amino acids during a single passage of water through the mantle cavity of… Expand
Uptake and assimilation of amino acids by platymonas.
- B. North, G. C. Stephens
- Biology, Medicine
- The Biological bulletin
- 1 April 1971
The marine phytoplankter, Platymonas, increases rates of amino acid uptake when grown on a restricted nitrogen supply. Uptake of glycine, arginine, and glutamate increases as much as 10-fold when… Expand
Bacteria-Free Sea Urchin Larvae: Selective Uptake of Neutral Amino Acids from Seawater
- D. Manahan, J. Davis, G. C. Stephens
- Biology, Medicine
- Science
- 8 April 1983
Bacteria-free suspensions of larvae of Strongylocentrotus purpuratus (Stimpson) were prepared without the use of antibiotics. Net rates of removal of 18 amino acids, each supplied at 125 nanomoles… Expand
Recent Progress in the Study of “Die Ernährung der Wassertiere und der Stoffhaushalt der Gewässer”
- G. C. Stephens
- Biology
- 1 August 1982
SYNOPSIS. It is now possible to provide direct evidence for net removal of significant amounts of specific amino acids from naturally occurring dissolved organic material by a marine invertebrate.… Expand