Microscope device with enhanced contrast formed by light illumination transmitted in two different spectral ranges

    公开(公告)号:US11366312B2

    公开(公告)日:2022-06-21

    申请号:US17267856

    申请日:2019-08-12

    发明人: Rainer Uhl

    摘要: There is provided a microscope device comprising a microscope objective (12), a first light source (18) for transmitted light illumination of the sample (16) with light within a first spectral range and a second light source (20) for transmitted light illumination of the sample with light within a second spectral range different from the first spectral range, a tube lens (22) for forming a sample-image from the light collected by the microscope objective, a first camera detector (32) for detecting light within the first spectral range, a second camera detector (34) for detecting light within the second spectral range, a dichroic beam splitter (24) in the image beam path (26) between the tube lens and the detectors, and an analyzer unit (44), The beam splitter reflects light within the first spectral range onto the first detector and transmits light within the second spectral range onto the second detector, and wherein the analyzer unit is configured to combine a first image of the sample recorded by the first camera and a second image of the sample recorded by the second camera so as to generate a total sample image with enhanced contrast.

    MICROSCOPE DEVICE
    73.
    发明申请

    公开(公告)号:US20210173203A1

    公开(公告)日:2021-06-10

    申请号:US17267856

    申请日:2019-08-12

    发明人: Rainer UHL

    摘要: There is provided a microscope device comprising a microscope objective (12), a first light source (18) for transmitted light illumination of the sample (16) with light within a first spectral range and a second light source (20) for transmitted light illumination of the sample with light within a second spectral range different from the first spectral range, a tube lens (22) for forming a sample-image from the light collected by the microscope objective, a first camera detector (32) for detecting light within the first spectral range, a second camera detector (34) for detecting light within the second spectral range, a dichroic beam splitter (24) in the image beam path (26) between the tube lens and the detectors, and an analyzer unit (44), The beam splitter reflects light within the first spectral range onto the first detector and transmits light within the second spectral range onto the second detector, and wherein the analyzer unit is configured to combine a first image of the sample recorded by the first camera and a second image of the sample recorded by the second camera so as to generate a total sample image with enhanced contrast.

    METHOD FOR THE GENERATION OF A CELL COMPOSITION VENTRAL MIDBRAIN DOPAMINERGIC PROGENITOR CELLS

    公开(公告)号:US20210079344A1

    公开(公告)日:2021-03-18

    申请号:US17011746

    申请日:2020-09-03

    摘要: The present invention discloses an in vitro method for the generation of a cell composition comprising or consisting of ventral midbrain dopaminergic progenitor cells from a cell composition comprising pluripotent and/or multipotent stem cells, the method comprising the steps of A) differentiating said pluripotent and/or multipotent stem cells into ventral dopaminergic progenitor cells, thereby generating a cell composition comprising ventral dopaminergic progenitor cells comprising ventral midbrain dopaminergic progenitor cells and ventral hindbrain dopaminergic progenitor cells, and B) Enriching CD117 positive cells from said cell composition comprising ventral dopaminergic progenitor cells by using an antigen binding molecule specific for the CD117 antigen, thereby generating said cell composition comprising or consisting of ventral midbrain dopaminergic progenitor cells. Cell compositions obtainable by said method are also disclosed.

    REVERSIBLE CELL LABELLING WITH CONJUGATES HAVING TWO RELEASABLE BINDING SITES

    公开(公告)号:US20210018498A1

    公开(公告)日:2021-01-21

    申请号:US17035833

    申请日:2020-09-29

    摘要: The invention is directed to a Method for detecting a target moiety in a sample of biological specimens by: a) providing at least one conjugate with the general formula (I) An-P-Bm-Cq-Xo  (I) with A: antigen recognizing moiety; P: enzymatically degradable spacer; B: first binding moiety C second binding moiety X: detection moiety; n, m, q, o integers between 1 and 100, wherein B and C are non-covalently bound to each other and A and B are covalently bound to P b) labelling the target moiety recognized by the antigen recognizing moiety A with at least one conjugate c) detecting the labelled target moiety via detecting moiety X d) cleaving Cq-Xo by disrupting the non-covalent bond between Bm and Cq from the labelled target moiety e) cleaving the binding moiety Bm from the labelled target moiety by enzymatically degrading spacer P. The method is useful to identify target moieties on the biological specimens. The biological specimens detected by the conjugate can be subsequently removed from the sample.

    METHOD AND KIT FOR CHARACTERIZING DOPAMINERGIC PROGENITOR CELLS OBTAINED BY DIFFERENTIATING PLURIPOTENT STEM CELLS

    公开(公告)号:US20240248076A1

    公开(公告)日:2024-07-25

    申请号:US18443732

    申请日:2024-02-16

    IPC分类号: G01N33/50 G01N33/58

    CPC分类号: G01N33/5005 G01N33/58

    摘要: The present invention provides an in-vitro method for analyzing a cell composition comprising human floorplate mesDA progenitor cells, the method comprising a) contacting the cells of said cell composition or the cells of a sample thereof with antigen binding molecules specific for the antigens FOXA2, OTX2, PAX6, and NKX6.1, thereby labeling the cells of said cell composition or of said sample, b) determining the percentage of said cells that are labelled with said antigen binding molecules for each of said antigens, and wherein the cells of said cell composition qualify as human floorplate mesDA progenitor cells if the protein expression profile of said cells is: 80-100% of said cells are positive for FOXA2, 80-100% of said cells are positive for OTX2, less than 10% of said cells are positive for PAX6, and less than 10% of said cells are positive for NKX6.1. A kit comprising said antigen binding molecules for use in said method is also provided.