TY - RPRT TI - Standardization of modified allergens using polymerized ragweed as a model system. AU - L C Grammer AU - M A Shaughnessy AU - R Patterson PY - 1987 DO - 10.1007/bf02802260 UR - https://pubmed.ncbi.nlm.nih.gov/2435396/ ID - 2435396 ER -