preferred_name: XANTHIUM STRUMARIUM VAR. CANADENSE POLLEN 0.05 g in 1 mL / PLANTAGO LANCEOLATA POLLEN 0.05 g in 1 mL / CHENOPODIUM ALBUM POLLEN 0.05 g in 1 mL / IVA ANNUA POLLEN 0.05 g in 1 mL PERCUTANEOUS INJECTION, SOLUTION [MIXED WEEDS]