Abstract: Apparatus for the treatment of a cancerous lesion part by irradiating a light energy from a light source to the cancerous lesion part having absorbed and accumulated in advance therein a photosensitive substance with an affinity for tumors, in which said light source comprises a first photodiode adapted to excite the photosensitive substance from the ground state thereof to a singlet state of higher energy level and a second photodiode adapted to exite an energy level of the photosensitive substance which has transited from the singlet state to a triplet state to a still higher energy level.

Abstract: The disclosed invention relates to a cell unit for use in observing an electophoresis which utilizes a measurement cell which accommodates a liquid specimen. A pair of conduit elements are used to introduce and discharge the liquid specimen into and from the measurement cell with one of the conduit elements having a flexible tube portion. Also included is a pair of valves for closing a pair of conduit elements with at least one of the valves being utilized as a pinch valve to pinch the flexible tube. A pair of housing elements accommodate a pair of electrodes with the electrodes producing an electric potential gradient in the specimen. Lastly, a pair of diaphragm elements are each disposed between the measurement cell and one of the pair of housing elements in order to separate a space in the measurement cell from the space in the associated housing element.