TY - RPRT TI - [Depressed passive hemagglutination reaction--a method of detecting non-agglutinating serologically active components]. AU - B V Karal'nik AU - L Ts Doroshkevich AU - S G Kaplan PY - 1975 UR - https://pubmed.ncbi.nlm.nih.gov/45972/ ID - 45972 ER -