Salve, questo protocollo si è dimostrato efficace nei nostri laboratori
1. Fix tissue in 2.5% glutaraldehyde in 0.1 M PBS (pH 7.4). 2. Cut up tissue into small blocks (1mm³) and continue fixing. 3. Wash in 3 changes 0.1 M PBS for 15 minutes each. 4. Post fix specimens in 1% Osmium tetroxide containing 1% potassium ferricyanide for 1 hr. 5. Wash in 3 changes 0.1 M PBS for 15 minutes each. 6. Dehydrate in graded series of alcohol (in PBS) for 15 minutes each: 1. 30% ethanol 2. 50% ethanol 3. 70% ethanol 4. 90% ethanol 5. 100% ethanol x 3 7. Dehydrate further in two 10 minute changes of propylene oxide. * 8. Infiltrate with a 1:1 mix of propylene oxide and epon for 1 – 3 hrs or overnight. 9. Infiltrate with pure epon overnight at 4° C or 1 hour at room temperature. 10. Continue infiltration with three 1 hour changes of epon. 11. Embed in pure epon at 37° C for 24 hours. 12. Cure for 48 hours at 60° C.