The present invention is a lower body workout apparatus that is a part of a gym and supports leg press exercise feature and may be combined with a leg extensioncurl feature. In particular, the present invention relates to full-length polypeptides, fragments, and variants of galectin 11. The spectrum of outgassed products is normalized, and an aggregate molecular contaminant film thickness is predicted from each material. The present method of staining is highly sensitive, extremely facile, and relatively non-selective and can be accomplished without the use of organic solvent additives. Also described are processes for the preparation of the formulation and a method of controlling weeds at a location by using the described formulation. The bipolar transistor has a single-crystal silicon emitter region with a thickness smaller than 50 nm.