Disclosed are devices for propagating at least one microtissue, methods for manufacturing such devices, and the use us such devices, said devices comprise at least one well, wherein said at least one well comprises an open upper section comprising an open upper end and an open lower end, and a lower section comprising an open upper end and a bottom end, wherein the upper section and the lower section are in fluid communication, and wherein the bottom end of the lower section of at least one well of said plurality of wells is provided with a well bottom, said lower section of said at least one well has a smaller cross-sectional area than the open upper section of the same well.