preferred_name: FRAXINUS AMERICANA POLLEN 0.05 g in 1 mL / BETULA PAPYRIFERA POLLEN 0.017 g in 1 mL / BETULA NIGRA POLLEN 0.017 g in 1 mL / BETULA PENDULA POLLEN 0.017 g in 1 mL / JUGLANS NIGRA POLLEN 0.05 g in 1 mL / POPULUS DELTOIDES POLLEN 0.05 g in 1 mL / ULMUS AMERICANA POLLEN 0.05 g in 1 mL PERCUTANEOUS INJECTION, SOLUTION [Pollens - Trees, Tree Mix 6]