Abstract: The present invention relates to a method of patterning and chopping 3D organoids prepared from human pluripotent stem cells, culturing the stem cells or progenitor cells, and inducing the differentiation thereof to obtain a large amount of finally differentiated cells. Compared to cells differentiated by a conventional differentiation method, the cells obtained in a large amount exhibit remarkably superior effects in terms of reproducibility, stability, and functionality, and thus are expected to be very useful for cell therapeutic agents or for the screening of therapeutic drugs.

Abstract: The present invention relates to a method, which patterns 3D organoids prepared from human pluripotent stem cells and chops the same so as to culture oligodendrocyte progenitor cells, and induces the differentiation thereof so as to obtain a large quantity of finally differentiated oligodendrocytes. Compared to cells differentiated by a conventional differentiation method, oligodendrocytes obtained in a large quantity have the same or superior reproducibility, stability, and functionality and have remarkably shortened differentiation time, and thus are expected to be very useful for cell therapeutic agents or for screening for therapeutic drugs.

Abstract: Proposed is an apparatus for checking a golf divot, which checks a position where a golf club comes into contact with the ground, a ground contact area, or a trace of the golf club when a user hits a golf ball with a golf club, so as to enable improvement of the user's swing, the apparatus including: a ball resting plate body having multiple pin-holes formed therethrough; multiple pins which are inserted into the pin-holes of the ball resting plate body, respectively, to vertically move and installed to allow upper end portions thereof to protrude upward from the ball resting plate body; and a ball resting plate body support means which supports the ball resting plate body in a state where the ball resting plate body is spaced a predetermined height apart from the ground.

Abstract: The present invention relates to an apparatus for checking a golf divot, which checks a position where a golf club comes into contact with the ground, a ground contact area, or a trace of the golf club when a user hits a golf ball with a golf club, so as to enable improvement of the user's swing, the apparatus comprising: a ball resting plate body having multiple pin-holes formed therethrough; multiple pins which are inserted into the pin-holes of the ball resting plate body, respectively, to vertically move and installed to allow upper end portions thereof to protrude upward from the ball resting plate body; a ball resting plate body support means which supports the ball resting plate body in a state where the ball resting plate body is spaced a predetermined height apart from the ground; a sensing unit which is installed under the pins, senses lowering of the pins, and generates a signal; a pin returning means which raises the pins to the original state, when the pins are lowered by a stroke of a golf club