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...changes altered the pharmacological properties. As in all areas of medicinal chemistry, modern techniques such as genomics, proteomics, X-ray crystallography and molecular modelling have served to provide new insights into how the steroids interact with receptors and enzymes, and to design new drugs based on that understanding. Steroids are defined as having a particular...

...changes over an interval of time, or an area or volume of space. Figure 1, for example, illustrates vector fields created by magnets (in part (a)) and fluid flow (in part (b)). A vector field can be thought of as a graph where every coordinate has not only a position, but also a magnitude and direction. In the images in Figure 1, these are represented by small arrows,...