Abstract: A detection agent for high malignancy breast cancer includes an antibody against collagen XIV, or a variant or derivative or fragment of the antibody. A therapeutic agent for high malignancy breast cancer includes a conjugate of an anticancer drug and an antibody against that protein, or a variant or derivative or fragment thereof. Accordingly, it is possible to easily and accurately detect and diagnose high malignancy breast cancer.

Abstract: A detection agent for high malignancy breast cancer includes an antibody against collagen XIV, or a variant or derivative or fragment of the antibody. A therapeutic agent for high malignancy breast cancer includes a conjugate of an anticancer drug and an antibody against that protein, or a variant or derivative or fragment thereof. Accordingly, it is possible to easily and accurately detect and diagnose high malignancy breast cancer.

Abstract: A method of activating an antigen is herein described. The method comprises providing an antigen activation solution and contacting the cell with the solution to activate the antigen. A method of detecting a cell fixed by a nonbridging fixation solution is also described. The method comprises providing an antigen activation solution, contacting the cell with the solution, immunostaining the cell, and detecting the stained cell. The solution used for these methods comprises an agent for breaking a hydrogen bond, and is also described herein.

Abstract: The detection agent for high malignancy breast cancer of the present invention includes an antibody against collagen XIV, or a variant or derivative or fragment of the antibody. The therapeutic agent for high malignancy breast cancer of the present invention includes a conjugate of an anticancer drug and an antibody against that protein, or a variant or derivative or fragment thereof. According to the present invention, it is possible to easily and accurately detect and diagnose high malignancy breast cancer.

Abstract: A screening method for a specific protein in a proteome analysis comprises: (a) obtaining samples containing a protein or protein digest from a cell or tissue in a specific group and a control group; (b) analyzing the samples obtained in the step (a) with a mass spectrometer, thereby obtaining mass spectrometry data; (c) analyzing the mass spectrometry data obtained in the step (b) using an arbitrary database searching software, thereby acquiring a protein list containing items for specifying proteins and indexes for identifying the proteins, for each of the samples; (d) averaging values of the indexes for each of the items in all of the protein lists acquired in the step (c), and acquiring protein list models of the specific group and the control group, containing the average values of the indexes; (e) calculating a difference between the average values for each of the items, between the protein list models of the specific group and the control group obtained in the step (d), and acquiring one protein list i

Abstract: A method of activating an antigen is herein described. The method comprises providing an antigen activation solution and contacting the cell with the solution to activate the antigen. A method of detecting a cell fixed by a nonbridging fixation solution is also described. The method comprises providing an antigen activation solution, contacting the cell with the solution, immunostaining the cell, and detecting the stained cell. The solution used for these methods comprises an agent for breaking a hydrogen bond, and is also described herein.