Method for observing stem cells, method for removal of cell region in state tending toward differentiation, and device for observing stem cells

An apparatus for observing stem cells, comprising:

• a light source configured to output light;
• an illumination optics configured to input the output light and irradiate stem cells placed on a transparent member with oblique illumination light;
• a camera having a two dimensional pixel structure, in which a plurality of pixels are two-dimensionally arranged and configured to capture a scattered light image of the stem cells;
• and
• a display configured to display the scattered light image, thereby identifying a stem cell that is in the state tending toward differentiation in the stem cells,
• wherein the illumination optics irradiates the stem cells with the oblique illumination light via the transparent member.

An apparatus for observing stem cells, comprising:

• a light source configured to output light;
• an illumination optics configured to input the output light and irradiate stem cells placed on a transparent member with oblique illumination light;
• a camera having a two dimensional pixel structure, in which a plurality of pixels are two-dimensionally arranged and configured to capture a scattered light image of the stem cells;
• and
• a display configured to display the scattered light image, thereby identifying a stem cell that is in the state tending toward differentiation in the stem cells,
• wherein the illumination optics comprises a light guide having a surface on which the transparent member can be mounted and another surface inputting the output light.