Abstract: The present disclosure provides a method for separating a neural crest derived cell from peripheral blood. In the present disclosure, a mononuclear cell is separated from the peripheral blood and then directly cultured, thereby maximizing use of a neural crest stem cell with a differentiation potential to avoid loss of the neural crest stem cell. In the method of the present disclosure, a sample to be separated is derived from the peripheral blood. The method shows less trauma and low cost. Most importantly, compared to extracting the neural crest derived cell from tissues, the neural crest derived cell extracted from the peripheral blood can be used clinically as a type of biomarker.

Abstract: Embodiments of the present disclosure relate to multimedia processing method, apparatus, device and medium, wherein the method includes: presenting a first multimedia interface comprising first content; receiving an interface switching request of a user in the first multimedia interface; and switching from the first multimedia interface currently presented to a second multimedia interface, and presenting second content in the second multimedia interface, wherein the first content comprises the second content and other content associated with the second content, and the second content comprises a target audio and a target subtitle corresponding to the target audio.

Abstract: A double-layered drainage tube, composed of an inner layer and an outer layer closely attached to each other is shown. The inner layer is made of a hydrophobic material, and the outer layer is made of a human biocompatible material. Liquids do not adhere to the inner wall, thereby preventing tube clogging. The outer wall is soft and elastic, has a smooth surface, and has a good compatibility with body tissues without causing inflammation. Moreover, in the case where there is no middle layer of a stainless steel wire, the diameter and cost of an outer tube are reduced and the insertion difficulty is reduced, and the inner diameter of the drainage tube is increased, and the effective drainage cross-sectional area of the drainage tube is increased.