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    therapies for eye diseases such as color blindness and macular degeneration tagged posts

    Human Retinas grown in a Dish explain how Color Vision develops

    October 14, 2018, Categories  Biology/Biotechnology, Health/Medical

    Temporally regulated TH signaling specifies cone subtypes. (A) Embryonic stem cell–derived human retinal organoids [wild type (WT)] generate S and L/M cones. Blue, S-opsin; green, L/M-opsin. (B) Organoids that lack thyroid hormone receptor β (Thrβ KO) generate all S cones. (C) Early activation of TH signaling (WT + T3) specifies nearly all L/M cones. (D) TH-degrading enzymes (such as DIO3) expressed early in development lower TH and promote S fate, whereas TH-activating regulators (such as DIO2) expressed later promote L/M fate.

    Temporally regulated TH signaling specifies cone subtypes.
    (A) Embryonic stem cell–derived human retinal organoids [wild type (WT)] generate S and L/M cones. Blue, S-opsin; green, L/M-opsin. (B) Organoids that lack thyroid hormone receptor β (Thrβ KO) generate all S cones. (C) Early activation of TH signaling (WT + T3) specifies nearly all L/M cones. (D) TH-degrading enzymes (such as DIO3) expressed early in development lower TH and promote S fate, whereas TH-activating regulators (such as DIO2) expressed later promote L/M fate.

    Biologists at Johns Hopkins University grew human retinas from scratch to determine how cells that allow people to see in color are made...

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