Peptide recognition by monoclonal antibodies may provide a useful model for drug development,
in particular to test the effects of conformational restriction on ligand binding. We have …

1. The land crab, Gecarcinus lateralis (Fréminville), was selected as the principal subject for
this study of anatomical relationships existing between neurosecretory centers in the …

The Falck and Hillarp fluorescence method was used in a study of the identification and
distribution of monoamine‐containing neurons in three species of planarians, with principal …

A recent, increased interest in invertebrate venoms has resulted in new knowledge concerning
their compositions and modes of action. However, much remains to be done with these …

The venom or venom-containing parts of 30 species of arthropods from North and South
America were examined for their content of 5-hydroxytryptamine (5-HT). The characteristic …

Biological Laboratories, Harvard University Regularly recurring changes in the physical
environment, such as are due to the seasons, the lunar month, the tides, and day and night, …

The following is the authors' summary. Decapod Crustacea are suitable for studies on the
mode of action of insecticides. They show symptoms similar to those shown by insects, they …

… preparation for the bio-assay of Ach in tissue extracts (eg Welsh, 1943 ; Welsh and Hyde,
1944a and b ; Prajmovsky and Welsh, 1948). In certain respects it is superior to the classical …

This was a study of the identification and distribution of quaternary ammonium bases in
representative coelenterates. The purpose was to determine if bases were present with …

The sinus glands of the Brachyura are composed of swollen nerve fiber endings, which
store and release secretory material synthesized within cells of the eyestalks, the brain and …