Hormone general remarks

Kaldewey H (1968a) Auxin transport general remarks concerning the terminology and the methods. In Vardar Y (ed) The transport of plant hormones. North-Holland, Amsterdam, pp 1-23... 

While the macromolecules and target tissues involved show extreme specificity for the appropriate steroid hormones and their congeners, the general scheme of the steroid-receptor mechanism is remarkably uniform. We can therefore deal with this receptor model in a general way, mentioning specific details as appropriate in the subsections of this chapter. 

There is an enormous market available for sensors or devices that can measure or simply detect some highly diluted chemical analyte. Detection of hormones, DNA, or toxins at the level of a few molecules at a time has significant value. This is reflected in the great number of papers and patents in this area. Here we will survey the more popular schemes. Spherical metallic nanoparticles, generally as a proof of concept, have demonstrated remarkable utility as substrates for these applications [114-116] however, gold nanorods and nanoshells could be even better [117-119] due to their more tunable optical properties. 

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