Dustbathing is one of the major behavioural systems of domestic fowl that is constrained by commercial caging systems. Although research conducted over the last 20 years has revealed a great deal about causation of dustbathing, attempts at measuring the importance to hens of having access to dustbathing substrate have proven difficult. Various economic techniques, operant conditioning and learn...
The work of Bernard Suits continues to be discussed in the sports philosophy field, over forty years after publication his brilliant book, Grasshopper: Games, Life, and Utopia. Much t...
Journal:
:Proceedings of the National Academy of Sciences of the United States of America2007
Vadim E DegtyarMiriam W AllersmaDaniel AxelrodRonald W Holz
The state of secretory granules immediately before fusion with the plasma membrane is unknown, although the granules are generally assumed to be stably bound (docked). We had previously developed methods using total internal reflection fluorescence microscopy and image analysis to determine the position of chromaffin granules immediately adjacent to the plasma membrane with high precision, ofte...