Abstract:
A membrane potential change detection device 1 is provided with a reflection interference measurement light source 106, a holder 103 which holds a transparent member 102a on which cells 101 are mounted, a reflection interference detection camera 110 which images light emitted from the reflection interference measurement light source 106 and reflected from the cells 101 through the transparent member 102a, to generate a reflection interference image, and an analysis unit 202 which calculates a parameter dI about adhesion between the cells 101 and the transparent member 102a from the reflection interference image and detects a change of membrane potential of the cells 101 on the basis of a change of the parameter dI.
Abstract:
A masking member in which an effect by fluorescence derived from fluorescent dye or a test compound in a buffer contained in a container together with an object to be measured is removed surely, and the need for removing excessive fluorescent dye or test compound contained in the buffer is eliminated. The masking member is employed when fluorescence of a measurement object arranged in the buffer within the container is measured from the bottom part of the container and comprises a light shielding part and an outer frame part. The light shielding part exhibits liquid permeability and intercepts background light from the buffer located on the side opposite to the bottom part of the container across the measurement object. While supporting the light shielding part, the outer frame part positions the light shielding part on the side opposite to the bottom part of the container across the measurement object. With such an arrangement, effect of background light derived from excessive fluorescent dye in the buffer is removed surely and the need for replacing process of the buffer is eliminated. The masking member is also applicable to the measurement of light emission.
Abstract:
A cell observation device is provided with a reflection interference measurement light source 106, a quantitative phase measurement light source 105, a reflection interference detection camera 110 which images light emitted from the reflection interference measurement light source 106 and reflected from cells 101, to generate a reflection interference image, a quantitative phase detection camera 112 which images light emitted from the quantitative phase measurement light source 105 and transmitted by the cells 101, to generate a quantitative phase image, an image alignment unit 201 which matches a spatial position of the reflection interference image with a spatial position of the quantitative phase image, to implement alignment between the two images, a first extraction unit 204 which extracts a first parameter from the reflection interference image in alignment with the quantitative phase image, and a second extraction unit 205 which extracts a second parameter from the quantitative phase image in alignment with the reflection interference image.
Abstract:
An aggregated cell evaluation apparatus 1 includes a laser light source 10, a speckle image acquisition unit 20, an SC calculation unit 30, an evaluation unit 40, and a memory unit 50. The speckle image acquisition unit 20 acquires a two-dimensional speckle image by forward scattered light generated in aggregated cells 90 by irradiation of the aggregated cells 90 with laser light output from the laser light source 10. The SC calculation unit 30 calculates a speckle contrast value K n of a speckle image In at each time t n , determines a maximum value K max among the speckle contrast values K 1 to K N , and normalizes the speckle contrast value K n at each time t n by the maximum value K max to obtain a normalized speckle contrast value K n '. The evaluation unit 40 evaluates motion of the aggregated cells 90, based on the normalized speckle contrast value K n ' at each time t n . This realizes a method and an apparatus capable of readily evaluating the motion of aggregated cells.
Abstract:
PROBLEM TO BE SOLVED: To provide a background light reducing member and a light measuring method for reducing effectively background light generated in liquid such as a buffer existing around a measuring object without exerting an influence on the measuring object, even when a container has a small size, and dispensing with replacement of the buffer. SOLUTION: This background light reducing member 1 is a member used for reducing background light generated in the buffer B around the measuring object S, when measuring through a bottom part of the container 40, light emitted from the measuring object S arranged in the buffer B in the bottomed container 40 by taking a fluorescent or light-emitting material. The member includes a hydrophobic contact part 10 inserted into the container 40 to be in contact with the buffer B and arranged so as to enclose a prescribed axis C along an insertion direction, and reduces background light owing to contact between the buffer B and the contact part 10 in the container 40. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a chip holder capable of holding a channel chip, and circulating more easily sample liquid in a channel in the channel chip. SOLUTION: This chip holder 1A holds the channel chip 40A having the channel 43 inside, wherein a liquid introduction hole 44 for introducing the sample liquid W into the channel and a liquid discharge hole 45 for discharging the sample liquid from the channel are formed. The chip holder 1A includes a base member 10 on which the channel chip is placed; a well member 20 mounted on the base member, pressing the channel chip, and having a well 26 for waiting the sample liquid supplied into the liquid introduction hole; and a cover member 30 mounted on the base member, pressing the channel chip, and having the first pipe 33 connected to the liquid discharge hole and the second pipe 37 inserted into the well 26. The well member 20 has a connection member 27 for connecting the well to the liquid introduction hole and allowing the sample liquid in the well to flow into the liquid introduction hole. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus and a method for detecting a change in a membrane potential capable of detecting the change in the membrane potential of a cell in a noninvasive method without labeling the cell membrane.SOLUTION: The apparatus for detecting the change in the membrane potential 1 includes: a light source 106 for reflection interference measurement; a holding section 103 for holding a transparent member 102a mounted with a cell 101; a camera 110 for reflection interference detection for imaging the reflected light which has been emitted from the light source 106 for reflection interference measurement and has been reflected from the cell 101 through the transparent member 102a to form a reflection interference image; and an analysis section 202 for calculating a parameter dI concerning adhesion between the cell 101 and the transparent member 102a from the reflection interference image and detecting the change in the membrane potential of the cell 101 based on the change in the parameter dI.