Vertebrate opsins can be further subdivided into rod opsins and four types of cone opsin, based on differential spatial expression, spectral sensitivity, and evolutionary history.

The firm works within a range of different spatial expressions including architecture, landscape, urban, and fine art projects.

Such a view is favourable to localism, the theory that attempts to reduce non-spatial to spatial expressions (Lyons, 1977a: 718f).

More worryingly, what are the implications of tying manifestations of urban crisis to these places that we call inner cities, thus characterising a social problem as a spatial expression?

The authors suggest that changes in the temporal and spatial expression of these two factors are possible developmental controls of beak morphology.

Furthermore, these social differences have a spatial expression, each group occupying distinct if overlapping regions of the football terrace (Figure 4.1).

The spatial expression of these differences appears at three levels of concentration and dispersal.

Verticality and great height have ever been the spatial expression of potentially violent power.

This diversity is explained by the evolutionary necessity of possessing variants that slightly differ in their temporal and spatial expression.

Monitoring β-glucuronidase activity through the use of a GUS assay allows determination of the spatial and temporal expression of the gene in question.