Disclosed and claimed is apparatus and methods for the growth of cells to high density, products therefrom and uses thereof. In one embodiment of one aspect of the invention, a multi-loop feedback control system incorporating information from a number of sensors is used to maintain the desired contact position in the presence of disturbances. The toolbar can be in, or a part of, the network browser. As a result a patch antenna device having a high gain and circular polarization characteristics can be realized by a simple structure.