Abstract: Provided is a pick-up apparatus. The medium pick-up apparatus comprise a support plate to support a medium, a pick-up roller unit comprising a pick-up roller for picking up the medium, a detection unit to detect the number of medium that is picked up by the pick-up roller, and a pick-up roller moving device to move the pick-up roller unit to space the pick-up roller unit from the medium supported by the support plate when the pick-up of predetermined number of medium is detected by the detection unit.

Abstract: A pH-responsive cell scaffold for growing a cell culture is disclosed. The cell scaffold has pores in which biological cells may be disposed. As the pH of the local environment drops, the cell scaffold swells to draw in additional oxygen and/or other nutrients. The increased supply of oxygen and/or nutrients increases the longevity of the cells. In some embodiments, the cell scaffold induces a change in gene expression that promotes wound healing.

Abstract: Provided is a pick-up apparatus. The medium pick-up apparatus comprise a support plate to support a medium, a pick-up roller unit comprising a pick-up roller for picking up the medium, a detection unit to detect the number of medium that is picked up by the pick-up roller, and a pick-up roller moving device to move the pick-up roller unit to space the pick-up roller unit from the medium supported by the support plate when the pick-up of predetermined number of medium is detected by the detection unit.

Abstract: The present invention relates to compositions comprising stimuli-responsive materials which can be used for delivery of agents. Materials are provided that can respond to changes in a surrounding environment, including changes in ion concentration. For example, one or more properties of the material may be affected by a change in pH and/or a change in the concentration of an ion. Such properties may include, for example, a dimension of the material (e.g., volume), the permeability of the material, and the like. In cases where the material comprises a therapeutic or diagnostic agent, the material may undergo a change in the rate of release of the agent upon exposure to certain conditions. The invention may also provide the use of said compositions for the manufacture of a medicament for delivering a therapeutic or diagnostic agent, in some cases, with enhanced selectivity and sensitivity.