Take a roughly 1 cm³ fragment from a damaged area of the pulmonary parenchyma. Deposit this specimen in an aluminium boat. Deposit 2 ml of lysis solution onto the specimen using a plastic pipette. Mince the fragment into small bits using a pair of scissors. After this operation, the preparation must resemble the preparation. Use the plastic pipette to take up about a millilitre of the liquid, making an effort not to take up the bits of solid tissue. Deposit three drops of this liquid in a small vial with a conical bottom (the reaction cup). Then add three drops of the migration solution using the dropper bottle. Next place a strip with the arrow pointing down into the reaction cup. Wait 10 minutes at most, remove the strip from the reaction cup, and interpret the result by comparing. To safeguard the reagents’ stability, take care to close the tube containing the strips immediately after removing a strip.