Abstract: The present disclosure provides a dynamic gesture identification method, a gesture interaction method and an interaction system. The interaction system includes: a dynamic vision sensor configured to trigger an event in accordance with movement of an object in a field of view relative to the dynamic vision sensor, and output an event data flow; a hand detection module configured to process the received event data flow to determine an initial position of a hand; a hand tracking module configured to determine a series of state vectors in accordance with the initial position of the hand; a gesture identification module configured to create an event cloud in accordance with event data corresponding to the obtained state vector, and process the event cloud to identify the gesture; and a command execution module configured to execute a corresponding operating command in accordance with the identified gesture.

Abstract: An industrial preparation of natural killer cells (NKs) is produced by: using umbilical cord blood and peripheral blood from legitimate sources as raw materials, obtaining stem cells by a method for extracting and separating karyocytes, or using FICOLL® or PERCOLL® density gradient media centrifugation to isolate and screen out karyocytes; diluting the above-mentioned karyocytes with cell culture medium, adding interferon, interleukin, CD3 antibody, and human albumin, loading them together into a bioreactor for perfusion culture, and then performing multiplication culture; the passage number of natural killer cells from multiplication culture is no less than 8, and the culture time is no less than 4 weeks; the markers of the natural killer cells obtained after the multiplication culture are CD3?\CD56+, CD16+, CD57+, and CD8+, wherein CD16+/CD56+?15%, CD3?/CD56+?50%, and CD8+/CD57+?8%; then preparing an injection with a certain concentration using the cell suspension obtained by above-mentioned method.

Abstract: Disclosed is an industrial preparation of natural killer cells (NKs) and an injection using human allogeneic karyocytes comprising: using umbilical cord blood and peripheral blood from legitimate sources as raw materials, obtaining stem cells by a method for extracting and separating karyocytes, or using Ficoll or percoll density gradient centrifugation to isolate and screen out karyocytes; diluting the above-mentioned karyocytes with cell culture medium, adding interferon, interleukin, CD3 antibody, and human albumin, loading them together into a bioreactor for perfusion culture, and then performing multiplication culture; the passage number of natural killer cells from multiplication culture is no less than 8, and the culture time is no less than 4 weeks; the markers of the natural killer cells obtained after the multiplication culture are CD3?\CD56+, CD16+, CD57+, and CD8+, wherein CD16+/CD56+?15%, CD3?/CD56+?50%, and CD8+/CD57+?8%; then preparing an injection with a certain concentration using the cell su