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        Alcian green stain for cartilage

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        This is an easy method for stianing cartilage that can be used with isolated or CAM-grafted limbs to study limb development or with whole embryos (8 to 12 days of incubation, ).

        1. Fix limbs or embryos in 5% TCA for 1 hour at room temperature.
        (Eviscerate embryos before fixation).

        2. Wash 3X with PBS.

        3. Immerse in Alcian green stain for 4 hours with gentle agitation.

        4. Wash 3X with 70% ethanol, several hours to overnight.

        5. Wash with 85%ethanol, 95% ethanol, 100% ethanol, several hours to overnight each.

        6. Clear by washing 1-3X with methyl salicylate.

        Alcian green stain:

        0.1 g Alcian green

        70 ml 100% ethanol

        1 ml conc. HCl

        29 ml dH2O

        (100 ml)

         

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