Abstract: The present disclosure relates to a hydrogel patch, including: a hydrogel patch containing a biocompatible polymer functionalized with a phenol group; and an exosome loaded in the hydrogel patch.

Abstract: Provided is a system and method for collecting a document. The system may include an identification information receiver to receive, from a host of a site, identification information of a document of which an update may occur, a collection request transfer unit to transmit a collection request for the document based on the identification information, an update information collector to receive update information of the document from the host, and a search result provider to provide, to the host, a search result extracted from the update information of the document, in response to the search request being received from the host. The system for collecting the document may reduce load of a web site, and may improve accuracy of the document to be collected.

Abstract: Provided is a system and method for collecting a document. The system may include an identification information receiver to receive, from a host of a site, identification information of a document of which an update may occur, a collection request transfer unit to transmit a collection request for the document based on the identification information, an update information collector to receive update information of the document from the host, and a search result provider to provide, to the host, a search result extracted from the update information of the document, in response to the search request being received from the host. The system for collecting the document may reduce load of a web site, and may improve accuracy of the document to be collected.