Abstract: A light irradiation device includes a tube including a tube main body and a light emitting portion, a plurality of wiring boards disposed inside the light emitting portion and including a plurality of light emitting elements disposed at an equal interval mounted, an anode lead wire for connecting an anode terminal of each of the wiring boards to a power source, and a cathode lead wire for connecting a cathode terminal of each of the wiring boards to the power source. In the light emitting portion, a central lumen and surrounding lumens that are arrayed at a 90° interval around the central lumen are formed. The wiring boards are disposed in the respective surrounding lumens with the light emitting elements arrayed along a longitudinal direction of the light emitting portion.

Abstract: A method for decomposing a compound represented by Formula (1) includes irradiating the compound with X-rays in a presence of an electron donor: wherein R111, R121, R131, and R141 each independently represent a monovalent organic group; p, q, r, and s each independently represent an integer of 0 or 1 to 4; in the case where two or more R111, R121, R131, and R141 are present, they may be identical to or different from one another or may be bonded to one another to form a ring; A101 represents a monovalent organic group; and A102 represents a hydrogen atom or a monovalent organic group). In the method, a photosensitive dye can be decomposed using an energy beam which can penetrate deeper into a living body than near-infrared light and activate the photosensitive dye.

Abstract: An ICG fluorescence image measured with an excitation light of 740 nm and a fluorescence of 845 nm is shown in FIG. 10, and an ICG fluorescence image measured with an excitation light of 780 nm and a fluorescence of 845 nm is shown in FIG. 11, respectively. As a result, it was observed that the ICG derivative RGD2-PPA-Cy accumulated in the tumor tissue 30 minutes after tail vein administration, regardless of whether the wavelength of the excitation light was 740 nm or 780 nm.

Abstract: This method for producing an aromatic astatine compound comprises reacting an aromatic iodonium ylide with astatine to produce an aromatic astatine compound.

Abstract: The invention provides an antigen or drug delivery complex containing a complex of an antigen or drug and a cationic molecule, and an anionic molecule encapsulating the same. The antigen or drug delivery complex can be used as a main component of a drug delivery system that delivers various antigens and drugs to a particular cell or organ.

Abstract: The invention provides an antigen or drug delivery complex containing a complex of an antigen or drug and a cationic molecule, and an anionic molecule encapsulating the same. The antigen or drug delivery complex can be used as a main component of a drug delivery system that delivers various antigens and drugs to a particular cell or organ.