Gene Expression in Drosophila - week 1
Check supplies in the "Drosophila stuff" cupboard under the white board before starting prep.
Fixative
Make fresh each lab day
0.2% glutaraldehyde in Shens
0.05 mL glutaraldehyde in 25 mL Shen's
aliquot ~2 mL per group
Stain buffer
ingredient | Cf (mM) | Stock (M) | 5 | 25 | 50 | mL |
---|---|---|---|---|---|---|
NaHPO4 buffer | 10 | 1 | 0.05 | 0.25 | 0.5 | mL |
K4Fe(II)(CN)6 | 31 | 0.005 | 0.31 | 1.55 | 3.1 | mL |
K3Fe(III)(CN)6 | 31 | 0.005 | 0.31 | 1.55 | 3.1 | mL |
NaCl | 150 | 5 | 0.15 | 0.75 | 1.5 | mL |
MgCl2 | 1 | 1 | 0.005 | 0.025 | 0.05 | µL |
add a maggot sized pinch per 5 mL
aliquot ~2 mL per group
can make for both sections at once
Stain
pinch of stain in 48 mL stain buffer
aliquot 2 mL per group
can make for both sections at once
Clearing
1 part stain buffer : 2 parts glycerol
Mounting Medium
ingredient | conc | Units | 100 | 250 | 500 | 1000 | mL |
---|---|---|---|---|---|---|---|
gelatin | 7 | % | 7 | 17.5 | 35 | 70 | g |
glycerol | 63 | % | 63 | 157.5 | 315 | 630 | g |
- dissolve gelatine in Shens by boiling
- Add glycerol
- Bring to final volume with Shen's
- Refrigerate
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