Abstract
A cell microcontainer which was fabricated with a phosphorylcholine polymer hydrogel on a microchip exhibited capability to flexibly preserve living cells for more than one week, not only at 37°C in a cell culture incubator but also at room temperature (RT) in a common indoor condition or at 2-6 °C in a household refrigerator. The use of the hydrogel microcontainer could facilitate various miniature cell-based tools to be used onsite or at home.